nothing that he/she says
No creas nada de lo que dice Tom.
Don't believe anything Tom says.
No entiendo nada de lo que dice.
I don't understand anything he's saying.
— Nicky, la aprendiz de bruja (1989)
Tom dice que no puede creer nada de lo que dice Mary.
Tom says he can't believe anything Mary says.
No entendemos nada de lo que dice.
We don't understand anything he's saying.
No podés creer nada de lo que dice ese tipo.
You can't believe anything that guy says.