Superman:

His flight path changes route to you right away, with extra speed and determination.

He will wrap his arms around your back and under legs then carries you bridal style, assuring he has you.

Carefully he puts you down, asks if you are okay then assures to just stay here and he'll deal with it.

Batman:

This is why he didn't want to start dating, because the second he saw you all focus went onto you and everything else become less important despite all else being a battle.

Though if he knows you can handle yourself and lift yourself back up he leaves it to you.

But bigger chance you will look up to see the bat standing there, grabbing your hand and helping you up. Once standing stable, where his hand is still on your waist to ensure balance, he will ask a "good?" then continue whatever chaos is happening this time.

Wonder Woman:

She'll rush up to you to lift you up with such ease, only needing one hand, not even a proper grip. She could do it with a pinky if she wanted!

But she shall use all fingers as she can't risk losing you. Or if you are about to slip she uses her lasso to swing you to her then catches you, giving a sassy romantic one liner with a proud smile.

Flash:

You WERE hanging on a ledge, are now safely on your feet, with Flash moving away as if he just put you down.

He will give you that dashing smile, a playful wink with a hint of assurance/comfort that he's here for you so all is fine, then dashes off to get back to his original target.

Hawkgirl:

A curse shall be muttered, using more brute force to defeat all near then rushes to take flight to go catch you before you slip off.

Once in her arms she'll make some teasing small talk as she goes down, puts you down, then rushes back to the action before it dares go on without her.

Green Lantern:

Obviously his powers. Simply imagines a platform for you so you can place your feet on it and let go of the edge then be brought down. Sometimes a giant hand to grab you and put you down. If this happens often he will keep changing it up, honestly for his own amusement.