I didn't ... to him/her
Je ne lui ai pas dit que Nandini était là.
I didn't tell him that Nandini was there.
— Mon cœur est déjà pris (1999)
I didn't talk to him.
Je ne lui ai pas dit d'arrêter.
I didn't tell him/her to stop.
— The Garden of Sinners, film 5 : Spirale contradictoire (2008)
I didn't do that to him.
Je ne lui ai pas demandé de venir.
I didn't ask him to come.
No, I didn't tell him.
Je ne lui ai pas dit que tu venais.
I didn't tell him/her that you were coming.
Je ne lui ai pas prêté attention.
I didn't pay attention to him/her.