The Blues will be hoping to at least maintain their one-point lead at the top of the Premier League with a victory over Arsene Wenger's side.
"The important thing is to win and keep our position in the Premier League. We have a very good defence, so it will be very hard for Lukas to play against us.
"I'm not sure they have played against a team so good so it will be harder for him and I know Branislav Ivanovic very well, he is one of the best defenders in the world so I am not scared."
Marin joined Chelsea from Werder Bremen in the summer.