Lucic, a Boston fan favorite due to his physical play on the ice, attributed the comeback to perseverance.
"It seemed like we started to play more reckless and taking pucks to the net and things like that. It was just like, (forget) it and leave everything on the line and hopefully everything will take care of itself," Lucic told NHL.com.
Bergeron capped off the magical night by collecting a loose puck in the Toronto end and sliding the puck past Reimer just over six minutes into the overtime period, giving the Bruins the series win, four games to three.
The Bruins will now meet the New York Rangers in the NHL's Eastern Conference semifinals. New York staged its own comeback in a quarterfinal series against the Washington Capitals, being down three games to two, by winning both Games 6 & 7 on consecutive nights.
Rangers goaltender Henrik Lundqvist was spectacular in both games, not allowing a single goal in either contest. Monday night, five different skaters scored for New York as they blanked Washington, 5-0.
Lundqvist credited the attention he pays to his craft, but noted how well his teammates have been playing in front of him, of late.
"As long as I'm focused on what I have to do, it is going to help me. But the way we've been playing, especially the last two or three games, as a goalie it is a great feeling. You feel the confidence from them, and hopefully they feel my confidence as well," the Rangers goalie said after the game.