急用英语说我请客你掏钱怎么说？

I will invite you to dinner,but the bill should paid by yourself.

Its on me.(我请客。)Its my treat. (我请客。)Bemyguest. (我请客。)
you pay the bill (你掏钱）

The dinner is on me ,But the money come from your wallet

i'll invite u,but u pay the bill.