you do to him/her
Do you see what you're doing to him?
Laisse-moi faire, tu lui fais peur.
Let me handle this; you're scaring him.
— Les Diaboliques (1955)
Si tu lui fais du mal, je te coupe la queue pour nourrir les poules.
If you hurt him, I'll cut off your tail to feed the chickens.
— Bacurau (2019)
What are you doing to him?
Do you trust him?
Tu lui fais toujours confiance ?
Do you still trust him?
Si tu lui fais du mal, tu me le paieras !
If you hurt him, you'll pay for it!
— Le Voyage de Chihiro (2001)