Rather than fight the big bad this time, Yondu's out helping people get out. And honestly he'd almost rather Raven not be fighting, considering what kinda mental beating she took.

So when he finds her helping evacuees, he rushes over to check on her.

"You're gonna get knocked around if you ain't careful, girl. You're makin' sure to keep close to people, right?" He triple checks, and by 'people' he means 'crew'. This place is collapsing.

It's then that he considers and starts unwrapping the bracer on his arm. He removes it, places it on hers, and starts binding it up. "I traded for this. It's supposed to heal ya some an' provide a kind of protective field, alright?" His coat is plenty armored. She needs something extra right now.