How do you professionally say…

This post is a collection of examples how to translate the things you want to write into a professional manner.
(Shamelessly copied from @Loewhaley)

RealProfessional
That sounds like a you problem.I believe that falls within your scope of responsibilities, but I’m happy to support where it makes sense.
Why didn’t you ask me for this sooner?Given the tight turnaround it would have been beneficial to have been looped in on this sooner.
Stop emailing me so often.To ensure that information does not get lost, let’s reduce frequency of information so that updates are only provided once more details have been established.
I’m not doing your job for you.I do not have the capacity to take this on in addition to my own workload but I’m happy to support where it makes sense.
I’m not staying late to deal with this.My workday concludes at 5 but I would be happy to prioritize this first thing tomorrow.
Stop CC’ing everyone.To optimize communication perhaps we can target these emails to a more focused group
Please hurry up and get this done.It is important that we have this completed in order to meet our targeted deadlines which are quickly approaching
Stay in your own lane.Thanks for your input. I’ll keep that in mind as I move forward with decisions that fall within my responsibility.
I’ve told you this multiple times.There seems to be a disconnect here as this information has already been provided
Stop bombarding me with messages.To ensure that information does not get missed, can you please condense your communications into a single email where possible?
This is not my problem.I recommend directing this issue to [name] as they have the proper expertise to best assist you.
If you would have read the whole email you’d know the answer to this.I have included my initial email below which contains all of the details you are looking for.
I have absolutely no idea what you are talking about.Can you help me better understand what exactly it is that you require on my end?
Stop micromanaging.I am confident in my ability to complete this project and will be sure to reach out if or when I require your input.
That’s not my job.This falls outside my responsibilities, but I would be happy to connect you with someone who can help
Stop assigning me with so many tasks if you want any of them done.As my workload is quite heavy, can you help me understand what I should re-prioritize in order to accommodate this new task.
Answer my emails.If there is a better way to get in contact with you please let me know as I am hoping to have this resolved as soon as possible.
Did you even read my email?Reattaching my email to provide further clarity
I’ll provide an update when I have one, stop bothering me.You have not heard from me because further information is not available at this time. Once I have an update I’ll be sure to loop you in.
I don’t want to talk to you right now.I am currently tied up with something but I will connect with you once I am free.
Do your job.It is my understanding that you are the appropriate person to contact in regards to this but if there is someone better equipped for this please let me know.
That sounds like a horrible idea.Are we confident that this is the best solution or are we still exploring alternatives?
I already told you this.As indicated prior…
Can you answer all the questions I asked and not pick and choose one?Are you able to provide some clarity around the other questions previously asked?
I told you so.As per my prediction, this outcome does not come as a surprise.
Can you do your job and respond to my emails?With deadlines approaching, it is imperative that I receive this information in order to proceed.
You are not my boss.I can look at prioritizing this behind my assigned responsibilities. However I cannot commit to a timeline as my workload is dictated by [name].
That meeting sounds like a waste of my time.I’m unable to add value to this meeting but I would be happy to review the minutes.
You are over complicating this.Being mindful of timelines, let’s concentrate on the initial scope.
I don’t think you’re understanding what’s going on.Moving forward I want to ensure we are aligned
That makes absolutely no sense.There seems to be a disconnect.
We do not have to have a meeting about this.Being respectful of everone’s time let’s discuss this through email until we have a more defined agenda.
Did you just take credit for my work?It is great to see my ideas being exposed to a wider audience and I would have appreciated the opportunity to have been included in the delivery.
Google that for yourself.The internet is a great resource for these types of questions and I am available to clarify elements that you are not able to find online.
What you are saying does not make sense.We seem to have a different understanding on this. Can you elaborate further on your thought process here?