Manager Arsene Wenger says Chelsea's lead at the top of the Premier League is comfortable enough for them to be "serene".
Arsenal's unbeaten run in the domestic league continue after a hard-fought 2-1 away win at Newcastle United.
But the Frenchman admits the primary objective continues to be to finish in the top four.
"We have played four games in two weeks and three away games at Manchester, in Monaco and here today and we've won all three," Wenger said.
"The last 14 minutes were difficult because our legs had gone a little bit and Newcastle played very well in the second half but we had an outstanding second half going forward.
"We had a fluent game by creating chance after chance and in the second half we just had to show different qualities and hang on.
"At the moment we are not concluding anything. We are in the fight. You have seen the game today - in every game we need to turn up and fight until the last minute to get the points and that's what we have to do.
"We just have to go for the next game and win it.
"Chelsea have a good security and at the moment I feel they have enough to be quite serene.
"We have Manchester City in front of us but if you look behind us it is tight as well, so the important thing is to win our games. Chelsea have too much security.
"The players want to do as well as they can. We know we have a fight first to be in the top four. We go step by step, game by game."
