Namestnikov gave New York a 3-2 lead at 2:17 of the second when the puck deflected off Luongo's helmet and skate and into the net.
"I think mentally going into the third period, 2-2 would have been … who knows maybe you squeak a point out, maybe you go into extra time," Panthers coach Bob Boughner said. "It's done, it's over. You can't control it. We just have to move on and clean up a few areas. But the game in general, I thought for being on the road here and coming out in this building, I thought we did a lot of good things."
Chytil made it 1-0 with his third goal in three games after going 17 straight without one, beating Luongo from a sharp angle at 3:03 of the first.
Hoffman tied it 1-1 at 4:40 with a shot from the point.
Ekblad put Florida ahead 2-1 on the power play at 10:11 with a shot from the top of the left circle, his third goal in three games.
Smith, a healthy scratch the previous three games, tied it 2-2 at 11:49.