no os olvidéis de

don't forget to

→ no
phrase Rare #46,285
don't forget to Used with vosotros, the informal plural form in Spain. It is followed by an infinitive, or by a noun or phrase referring to something not to be forgotten.
SP: No os olvidéis de cerrar la puerta al salir.
EN: Don't forget to close the door when you leave.

No os olvidéis de atrasar vuestros relojes una hora.

Don’t forget to set your clocks back an hour.

Por favor, no os olvidéis de lo que hablamos.

Please don’t forget what we talked about.

No os olvidéis de apagar todas las luces antes de salir.

Don't forget to turn off all the lights before leaving.

No os olvidéis de traer cilantro, chiles y jengibre.

Don't forget to bring cilantro, chilies, and ginger.