Bravo will start against his former club when the teams meet at the Camp Nou on Wednesday.
The Group F match has been deemed "high risk" by authorities in the Spanish capital after previous serious incidents involving some Legia supporters.
City have played Barca four times in the Champions League over the past three seasons, losing on each occasion.
Former Barca boss Guardiola faces his old club in the Champions League, with Messi fit again after he returned from a groin injury.
Claudio Bravo has backed former teammate Marc-Andre ter Stegen to bounce back after the Barcelona goalkeeper came in for criticism.
Luis Enrique was pleased at his revamped Barca formation in Saturday's 4-0 win but refused to say if he'd try the same set-up vs. Manchester City.