The attacker was pleased with his side's performance on Tuesday but acknowledged there is still room for improvement this season
The Bundesliga champions impressed with a comfortable win at the Allianz Arena with Robben scoring the final goal of the night in some style, yet the Netherlands international has urged his team-mates not to get carried away with their form.
"We’re in a process of development and we can still get better. But we’ll take it on from here," Robben was quoted as saying on the official Bayern website.
"We played well, but we have to keep our feet on the ground. CSKA were good opponents, so winning 3-0 is a good start. The first task is to survive the group stage, and then we’ll take it as it comes.
"It felt good to play in the Champions League again. It's a fantastic feeling when you hear the Champions League anthem. We were all looking forward to it. There was a difference compared to Saturday."
Bayern resume Bundesliga action on Saturday when they travel to Schalke.