City's attention now turns to Tuesday's much-anticipated visit of Barcelona.
Nasri said: "It is a massive game. Every player wants to play those kind of games - Champions League, last 16, against Barcelona.
"The good thing is we are really strong. We have our confidence back.
"I think they are weaker than they were two years ago.
"I think it is going to be a tight game and an interesting game for everyone."