не позволяй ему

don't let him

→ не
phrase Rare #47,468
don't let him An informal singular imperative meaning “do not allow him to”; followed by an infinitive or another action.
RU: Не позволяй ему брать мои вещи.
EN: Don't let him take my things.

Не позволяй ему так с собой обращаться!

Don't let him treat you like that!

— Счастливый Лазарь (2018)