Dadonov scored another power-play goal at 14:26 of the third period for the 5-0 final score.
The Panthers tied their season high with 44 shots on goal in their most lopsided victory, topping a 5-1 win against the Ottawa Senators on Nov. 11.
"I thought we had a great first period and we just wanted to keep building off of that and keep pushing," Luongo said. "Once we got that first one on a bit of a lucky break, the boys started to feel more comfortable and got a couple more.
"The boys did a great job. There weren't a lot of breakdowns, a lot of odd-man rushes, breakaways, stuff like that. It really helps my game when we play like that defensively, and it also translates in offense for our club. Take more of those hopefully."