get upset, get worked up
No te alteres, ya oí todo eso.
Don't get upset, I've heard all that before.
— La infancia de Iván (1962)
No te alteres.
Don't get upset.
— Левиафан (2014)
Vladímir, no te alteres.
Vladimir, don't get upset.
— Кин-дза-дза! (1986)
No te alteres, sólo está bromeando.
Don't get upset, he's just joking.
— Jean de Florette (1986)
No te me alteres, gorda.
Don’t get worked up, babe.
— Diarios de motocicleta (2004)