Emery stopped 30 shots and Martin Havlat scored for the fourth straight game Thursday night, leading the Eastern Conference's top seed to a 5-2 victory that pushed the defending Stanley Cup champion Tampa Bay Lightning to the brink of elimination.
The Senators lead the best-of-seven series 3-1 and can close it out by winning Game 5 in Ottawa on Saturday night.
"We've put ourselves in a good spot, but it's not said and done. We've still got to finish it off," Emery said. "We realize at home is our best opportunity to do that. We've just got to
refocus for that game."
To stay alive, the Lightning have to win three straight games against an opponent they have only beaten three times in 24 meetings over the past five seasons.
Havlat, who assisted on Heatley's goal, has eight points in the series after missing 58 regular-season games with a dislocated shoulder.
Martin St. Louis and Brad Richards scored in the opening period for Tampa Bay, which sputtered after a strong start. Goalie John Grahame allowed four goals in 17 shots after giving up five in 20 shots in a lopsided loss in Game 3 on Tuesday night.
"I'm getting tired of the 25 percent rule," said Lightning coach John Tortorella, who plans to start backup Sean Burke in Game 5. "It's deflating."
Despite being dominated during the 8-4 loss in Game 3, Tortorella said after the game he felt his team had gotten to Emery with three third-period goals and called the rookie Ottawa's "weak spot."
That certainly wasn't the case Thursday night.
The Lightning's first goal glanced off St. Louis just as the Tampa Bay star was pushed into Emery in front of the net. The rookie stopped 19 shots during the last two periods, giving his teammates a chance to take control of the game.
"I don't really read that stuff, but I'm sure he's probably trying to get in my head," Emery said.
The Senators struck first when Spezza took a pass from Heatley and deked Tampa Bay's Dimitry Afanasenkov to get a clear shot at Grahame from the slot. The goal gave the Ottawa center points in all four games of the series, but hardly slowed down the Lightning.
St. Louis' fourth goal of the series tied it five minutes later, and Richards' second put Tampa Bay ahead 2-1 with 3:45 remaining in the opening period and gave a sellout crowd of 20,682 hopes of evening the series.
That chance evaporated in the second period.
Phillips tied it early in the period, and the Senators scored twice in 40 seconds for a 4-2 lead with 2:10 left. Havlat flicked a pass through the crease for an assist on Heatley's power-play goal that snapped the tie and then gave Ottawa some breathing room with the last goal against Grahame.
Burke replaced Grahame and gave up Neil's goal less than two minutes into the third. He said there's no finger-pointing in the Lightning locker room.
"It's three games to one. We've got to win some hockey games," Burke said. "To blame anybody right now, it's too late."
Tampa Bay left winger Chris Dingman was scratched and replaced by right winger Rob DiMaio. Dingman gave the Senators a seven-minute power play in Game 3 by drawing penalties for instigating and fighting. When asked if that was why Dingman sat out, Tortorella said: "Yes." ... Ottawa center Mike Fisher was in the lineup despite swelling near his right eye. He was cut below the eye when he was hit by a shot in Game 3.