The two sides meet in Group F at the Stade Velodrome this evening with both coming on the back of defeats in their last outings in the competition.
"We know [Mathieu] Valbuena's skills very well and their team is also very strong so we have to be careful and to try not to leave any empty space," Inler said in a press conference. "We should try to play as we're able to play and prove our skills on the pitch.
"Marseille is very similar to Napoli - a few friends of mine have played in this team and described the atmosphere at the stadium and their supporters have a real passion for football.
"I really like such stadiums; therefore it's going to be a beautiful match tomorrow."
The match gets underway at 7.45pm.