you must not
You don't have to call me.
Non dovete preoccuparvi per lei.
You don't have to worry about her.
Se non volete parlare, non dovete farlo.
If you don't want to talk, you don't have to.
You don't have to apologize to me.
Non dovete annullare le vostre vacanze.
You must not cancel your vacation.
You mustn't touch it.
Non dovete vederli come non erano.
You don't have to see them as they weren't.
— La banda Baader Meinhof (2008)
Non dovete dire tutto a Tom.
You mustn't tell Tom everything.