Okay, this has gone on long enough. Tony tosses the pillow away and grabs for Steve's arm. He tries to do it gently, but it's still a shake. It's hopefully enough to jar him out of it. He keeps his face back and out of the way in case Steve swings. Again, he isn't scared for himself, but for how Steve might react if he hurt him in his sleep.
"It's Iron Man. You're safe. I won't let anything bad happen to you..." His hand settles onto Steve's shoulder, fear rising in his eyes as he waits to see what will happen next.