PHILADELPHIA -- Fans at Citizens Bank Park got a little comfortable when the Phillies built a six-run lead over the Braves on Sunday afternoon.

So comfortable that they began to pump their arms in a chopping motion while chanting: "Ohhh, oh, ohhh."

It was the "Tomahawk Chop," a chant normally done by Braves fans in Atlanta, but employed mockingly by a sellout crowd after the Phils surged back from a five-run deficit en route to a 12-10 win over the Braves, their 10th victory over Atlanta in 12 games this season.

This one unfolded in a manner similar to Saturday's win, when the Phillies came back from a 9-3 hole in the fourth inning on their way to a 10-9 win. On Sunday, the Braves built a 5-0 lead, tagging starter Joe Blanton for two runs before a two-hour rain delay. After the delay, Blanton was replaced by Adam Eaton, who surrendered two home runs.

But the Phils hit two homers of their own in the fourth -- a two-run shot by Chris Coste and a three-run homer by Shane Victorino -- to tie the game. Pat Burrell put the Phillies ahead with a solo shot in the fifth.

"We showed [Saturday] night and [Sunday] -- never give up," Victorino said. "We never will give up, and I think that's what makes this team so fun and exciting to be on."

When Jayson Werth added a two-run blast in the sixth and Jimmy Rollins hit a solo homer in the seventh, the Phillies had set a season-high mark with five home runs in one game.

"The last couple years, since I've been here, we've played good from behind," Werth said. "It's not where you want to be, but it just shows you that you're capable of hitting, especially late in the game."

Even though the Phillies have been dominant against Atlanta, they've struggled lately against other foes. Since June 5, the Phillies are 8-1 against the Braves and 12-22 against the rest of the Majors.

The Phils' lackluster offense finally allowed the Mets to push them out of the top spot in the National League East on Thursday, when the Mets beat them, 3-1. Between June 8 and Thursday, the Phillies were held to three or fewer runs 13 times. Between June 13 and Thursday, the Phils had hit .238.

But Sunday's win brings renewed optimism for the Phils' offense, which scored double-digit runs for the second consecutive game for the first time since May 25-26. It also allowed them to remain one game behind the Mets in the standings.

"We scored runs and hit today, but when I talk about inconsistent, that's the part you see," manager Charlie Manuel said. "We've been inconsistent ever since we took over first place, and that seems like a long, long time ago."