Antonio Conte's side put in an impressive performance in Tuesday's 1-1 draw at Stamford Bridge and took the lead just after the hour through Willian, who had already struck both posts in the first half.
According to them, the England global did not feature against Barca because he was "too affected" by the news that Ryan Mason had retired from football. He has been involved in 18 goals (11 converted and 7 assists) which is his joint highest in a blue shirt with 2015/16 - where he won Chelsea Player of the Year by a mile - but has done it in 1,700 fewer minutes and 18 fewer starts.
"In a hard game we played very well", Willian said. That's my place. We're going to see how we will play in Barcelona.
As Cesc Fàbregas said, it would be "a suicide mission" to think they can go to the Nou Camp believing they can defend for 90 minutes. He showed Barcelona what he can do which is to shift to his right foot which we saw twice with a couple of sighters and on the third time he buries it.
Barcelona's talisman Messi had fired blanks on eight previous occasions against Chelsea, most notably in a shock semi-final defeat six years ago, and he rarely had a glimpse of goal on his ninth meeting with the Londoners. Conte, relatively becalmed over recent weeks as a season of disputes behind the scenes, largely over recruitment, appeared to take its toll and the team's results stuttered, was back to his firebrand best on the touchline.
"But we know very well against opponents like these that if you make a mistake you pay". We have to give the maximum.
"At times it seemed like a handball match, because they sat back and waited", said Barca midfielder Ivan Rakitic. "I thought we were very good and went with a gameplan and executed it well". We will go to try to win.
Lewandowski polished off the win with two late goals to give Bayern a seemingly insurmountable five-goal cushion ahead of the second leg of the last-16 tie in Istanbul on March 14.
The Italian was happy for Barcelona to have a free man available on either flank as it meant he could get more players surrounding the ball.