The Gunners trailed the French giants 1-0 at the end of 45 minutes in their opening Champions League fixture of the 2016/17 season.
Regarding his half-time team talk, Wenger told arsenal.com: "When you start so badly against a team of that quality you need experience.
"If you are too young, you can be caught. I thought that we didn't panic, and overall we were resilient enough, and the resilience comes through experience.
"I told the players at half-time that if we keep playing we will come back, because we could see if we had better possession we could score goals."