"This game was all Roberto," Canucks coach Alain Vigneault said. "And we're not going to apologize for it because so many times this year we outplayed the opposition and got on the wrong side of it."
Raymond also assisted on Alexander Edler's goal.
"It's day-by-day and you are always working harder to better yourself," Raymond said. "When you get a goal under your belt it gives you a bit of confidence. Confidence can carry you a long way."
It was Vancouver's second successive overtime game. It was the third overtime game in the past four for the Predators and their fourth game in a row to be decided by one goal.
"The thing I like about this game is no one is satisfied with just one point," Nashville's J.P. Dumont said. "There is a lot of frustration right now."
Raymond, the first shooter for the Canucks, scored on a backhand shot over Predators goaltender Chris Mason, who was lying down on the ice.
The Canucks got on the board first. Raymond skated, undefended, across the goal mouth beat Nashville's Mason from the right side with 52 seconds left in the first period.
Arnott tied the game on a 5-on-3 power play at 5:42 of the second period. Dumont passed the puck from the right to the left side to Arnott, who fired the one-timer high over the back of Canucks goaltender Roberto Luongo from low inside the left circle.
Edler put the Canucks back in the lead on the power play at 12:49 of the second period. Raymond passed the puck to Edler just inside the blue line and he blasted a one-timer between Mason's legs.
Zidlicky tied the game at 2 on a power-play goal at the 13:58 mark. His shot from the left circle beat Luongo low to his stick side.
"We came back twice in this game," Nashville coach Barry Trotz said. "It is the third straight game we have had a comeback in the third period.
"It is a matter of resiliency. We are going to have playoff games the rest of the way through. Games like this will prepare us for the playoffs if we get in."
- Vancouver's Ryan Shannon was credited with two assists.
- Dumont has points in the past five games he has played (three goals, seven assists).
- Arnott has 10 points in his past seven games (four goals, six assists).
- The Canucks have had 18 one-goal games in their past 23.
- Nashville's Martin Gelinas left the game with a leg injury in the second period and did not return.