Arsenal defender Cedric Soares believes their win over Liverpool will give them the confidence to take on Manchester City.
The Gunners will face the FA Cup holders in the semi-finals of the competition at Wembley this weekend.
Arsenal have shown signs of improvement under Mikel Arteta but, by the Spaniard's own omission, are "enormous" lengths away from competing with England's elite.
City have twice beaten the Gunners 3-0 this season, the most recent of which came last month.
But the north London outfit overcame an early goal to see off Liverpool at the Emirates to enhance their chances of qualifying for the Europa League.
And Soares, who joined on loan in the summer, is confident that they can challenge Pep Guardiola's side.
He said: “Teams have moments and when you keep growing something the wins always give you a push.
“You have to believe in the work of the coaching staff every day and, of course, when you win you can believe more and it helps the team in that moment.
“We know it will be another tough game against a great opponent on the weekend, but we are in a good moment.
“I just think we need to keep this spirit and the rest will come. If we keep working like this, it is just the natural way for a win to come.”
Arsenal have a poor record when it comes to protecting a lead having dropped a league high 15 points.
That was the case when they took the lead against Tottenham on Sunday before losing 2-1.
But Soares reckons, following their reverse in the derby, that they are rediscovered the character is takes to battle through tough situations.
He added: “I think against Tottenham it was a different game, we gave our best and controlled most of the game but didn't get the three points.
“We had a great reaction with character, we showed that sometimes you need to be able to suffer and stay together as one.
“We did that, we showed a great attitude, everyone was supporting one another and when that happens the wins can happen like they did.
“That shows maturity – we knew they would try and put us under pressure but we defended well, worked together as one.
“They are the champions this year, they have great quality but we showed very good character and that is why we got the three points.
“The spirit is getting better and better in the team and we showed here without suffering you cannot win.
“It was a tough game but we were able to show great character and this made the difference.
“We performed well. We defended together and we were very, very strong. It made a huge difference.”