Manager wants me, an intern, to make a presentation for employees. How do I deal with it without harming my relationship with the other interns?

I hope this makes sense.

There is no way for me to describe my work without doxxing myself or being confusing, so let’s just say that I am at a non profit that helps companies in a specific area. I am a receptionist and happen to know a lot about the specific area mentioned.

We got a new “”manager”” (he’s kind of the boss of the interns and the lower employees in the company). This is the second month he’s been here. The other interns recently have been constantly accusing me of being his favorite. I don’t particularly feel like I am, he’s kind of just forced to talk to me a lot because I am annoying and am always asking questions.

Anyway, today he talked to me because some of the older employees need to have an introduction to that specific area and he thinks it would be good for me to make a presentation for them. I said that I didn’t really know because though I have the knowledge I am not great at public speaking and he said he thought I was the best for the job and he would see when the other employees had time for it.

You can imagine why I think this will only worsen the accusations of favoritism LOL how do i deal with it? If it really ends up happening the others are going to be very mad at me. Do I just refuse the offer (i was thinking of doing it anyway because i really do suck and if i stutter in front of them i might just throw myself out of the window. Should I take it and hope for the best?