you should be alert
Hasta ese día, debes estar atento y vigilarla.
Until that day, you must be attentive and keep an eye on her.
— Ne Zha (2019)
Debes estar atento de los carteristas.
You must be on the lookout for pickpockets.
Y dime, ¿no hubo nadie que te dijera que debes estar atento y debes escucharlo?
And tell me, was there no one who told you that you need to pay attention and listen to him?
— Pinocho (2019)
Debes estar atento a los enemigos.
You need to watch out for enemies.
— Avatar: El camino del agua (2022)