Dubinsky was assessed a two-minute penalty for cross-checking Crosby in the back of the neck at 18:40 of the second period.
Crosby went to the dressing room but returned for the start of the third period. He assisted on Evgeni Malkin's power-play goal midway through the third period.
Crosby said after the game that he was fine.
"I'm OK,'' he said. "There is always concern when that happens. Yeah, I'm good. Honestly, I didn't even see it, so I don't know how it looked. I just know how it felt.''