
Inzaghi, who earlier hit the post and the bar, collected a lobbed pass from Zambrotta, controlled it first time and prodded the ball home for the equalizer with just seconds of the game remaining.
Milan remains unbeaten with seven points from three games to top the group while Portsmouth now has just one point from two games.
CSKA went ahead through 18-year-old striker Alan Dzagoev in the 31st minute with his third Group H goal, and Yuri Zhirkov doubled the lead with a volley in first-half stoppage time.
Semir Stilic threatened a Lech comeback when he pulled one back for the Polish visitors in the 66th with a 25-meter (yard) free kick.
While CSKA has won all three matches, once-mighty Feyenoord lies bottom of the group with no points. Spurs manager Harry Redknapp is confident they will progress after a second straight win in the competition at Nijmegen. "With six points it's job done," Redknapp said. "It was difficult, the pitch wasn't particularly good and it was difficult to pass the ball, but we were strong and solid and never felt in any danger."
Jamie O'Hara headed into an unguarded goal in the 14th after striker Frazier Campbell, on loan from Manchester United, rattled the crossbar.
Ivan Saenko gave Spartak Moscow a crucial win at Dinamo Zagreb ahead of its final Group D match at Spurs. Manchester City showed that the newly wealthy Premier League side isn't dependent on Brazil forward Robinho, who was out with an ankle injury.
... contd.