ne m'a rien dit

didn't tell me anything

→ ne
phrase Uncommon #19,432
didn't tell me anything Used with a subject before it, as in « Il ne m'a rien dit » (“He didn't tell me anything”). « Ne... rien » means “nothing” or “anything” in a negative sentence, and « m' » is the shortened form of « me » before a vowel.
FR: Elle ne m'a rien dit à ce sujet.
EN: She didn't tell me anything about it.

On ne m'a rien dit.

No one told me anything.

— Léviathan (2014)

Tom ne m'a rien dit.

Tom didn't tell me anything.

Il ne m'a rien dit, je le jure.

He didn't tell me anything, I swear.

Non, il ne m'a rien dit.

No, he didn't tell me anything.

Fadil ne m'a rien dit.

Fadil didn't tell me anything.

Il ne m'a rien dit.

He didn't tell me anything.

— Harry Potter et la Coupe de feu (2005)

Personne ne m'a rien dit.

No one told me anything.

Elle ne m'a rien dit.

She didn't tell me anything.

Non, elle ne m'a rien dit.

No, she didn't tell me anything.