a more vulgar would be

Eist do bheal! literally - listen to your mouth!

can't do diacriticals, but first E is long - Aysht duh vale!

Ciunas! as above is more common

fanaigi ciuin! fun iggy cue in - stay quiet!

or fanaigi socair! fun iggy suck ear

maybe suaimhnigh sibhse! quieten yourselves!