Lass es dir schmecken.
Guten Appetit!
enjoy your meal
The dictionary form/infinitive is "geniessen," and if you mean it as a command e.g. "enjoy [your meal]" it would be "geniesst" to a group of friends or "geniessen Sie" to strangers; however, if you are looking for what to say at the start of a meal, Germans simply say "guten Appetit" (bon appetit, or good apptite).
In italy you should say 'Bon Appetit' (Enjoy Your Meal)
You could borrow the French and say "bon apetit", or say "Enjoy your meal." It literally means "good benefit".
"Enjoy your meal" is "appréciez votre repas" in French. A standard formula is "bon appétit".
There isn't a language called Mexican.
Приятного аппетита Priyatnogo appetita
enjoy your meal
buon appetito
We say "Bon appétit"
We just say Bon Appetit or Enjoy your meal...
"Lass es dir schmecken" means "enjoy your food/meal".