don't worry
Ne t'en fais pas, ça ne me montera pas à la tête.
Don't worry, it won't go to my head.
— Princess Bride (1987)
Don't make an enemy of him.
Ne t'en fais pas, je me charge de prévenir la famille.
Don't worry, I'll let the family know.
— Une femme fantastique (2017)
Ne t'en fais pas, tu as bien fait.
Don't worry, you did the right thing.