The Gunners struggled for fluency in the match at the Emirates Stadium and fell behind in the 56th minute to a strike from Nacer Chadli.
He told the club's official website: "It was tough. We knew it was going to be tough. It was my first taste of a north London derby and I really enjoyed it.
"This team has got great character. It's a great group of lads and we'll go on to the next game, take positives from this game and learn from it.
"I think the work ethic and the desire we showed to come back from a goal down, and the passion we showed when we were a goal down, is what we can take into the next match and the games to come."
Arsenal are fourth in the Premier League with 10 points from their six matches this season.