stare attento, fare attenzione

listen to the pronunciation of stare attento, fare attenzione
الإيطالي - الإنجليزية
watch out
To be aware or conscious; to look closely or carefully; to use caution. Often used in the imperative

Watch out for low doorways, so you don’t hit your head.

be careful
If you tell someone to watch out, you are warning them to be careful, because something unpleasant might happen to them or they might get into difficulties. You have to watch out because there are land mines all over the place = look out
be vigilant, be on the lookout, be on one's guard, be careful; "Watch out for pickpockets!"