pay no attention
Nada, ni caso.
No, forget it.
No hacen ni caso.
They don't pay any attention at all.
— Buenos Muchachos (1990)
No les haga ni caso.
Don't pay any attention to them.
— Le notti di Cabiria (1957)
Ni caso.
Never mind.
— La Sociedad de los Poetas Muertos (1989)
No me hizo ni caso.
He didn't pay any attention to me.
— Simón del desierto (1965)