Dick had just walked into your bedroom he'd heard some noise after he'd gotten home from an early patrol, maybe you had fallen off the bed it wasn't the first, time you had fallen off while sleeping.
He thought he'd find you drowsy and confused though as he walked closer, he only found you trembling in a cold sweat sitting up on the bed. He knew you got nightmares often but he'd never actually had the misfortune to find you after a particularly bad one or any for that matter.
"Hey.. you okay?" Dick said worry filling his tone, eyes, and everything in-between.. his only goal became to comfort you, so he went over and wrapped his arms around you gently to not make it worse. He rubbed his thumb on your arm. His voice is comforting. "Just breathe, it'll be okay, what do you need me to do?" He whispers trying to get you to talk and distract you as a way to comfort you.