Let's go dutch - I don't feel right about you paying for me

I'd prefer to pay for myself, if you don't mind. /Let's go Dutch, OK? I feel a bit awkward when you pay for me.

Let me pay the bill. I feel awkward/I don't feel comfortable (about the fact you are going to pay)

I'd rather pay the bill myself

It's more convenient for me to pay the bill by myself.