Deschamps, a former Chelsea favourite and an FA Cup winner with the Blues in 2000, marvelled at Chelsea's performance afterwards, saying he believed they were one of the favourites to win this season's competition, despite a recent mini-slump domestically.
"We were dominated both physically and technically, there was a huge gulf in class between the two sides," Deschamps told reporters.
"Chelsea had a very effective first half and we lacked a bit of aggression. Although we did better in the second half, you have to say they could easily have scored a third.
"I am a realist. We came here full of ambition, and full of hope, and despite the fact they had some of their main players missing they were still full of internationals.
"We were vastly inferior in the first half at least and Chelsea remain one of the favourites to be champions of Europe. They were so solid and efficient."