Arsenal gave away a 2-0 half-time lead in a game Spurs managed to win 3-2.
The Gunners can book their place in the knockout stages of the Champions League with a win over Braga this week.
“It will help us to forget the Tottenham game and we must focus on Braga and get a victory,” said Chamakh.
“The group is tight,” added Chamakh. “There are three teams going for top spot so we know we need to get a win over there.”
