The Argentine forward is brimming with confidence following PSG's first-leg win and is optimistic about his side's chances of reaching the semi-finals
Lavezzi was a key member of the Napoli team that crashed out of the competition at the hands of Chelsea in 2011-12 after winning the first leg 3-1 as well, yet the Argentina international has insisted the current situation is completely different.
"I'm not worried about Chelsea pulling off a repeat of their comeback against Napoli because this is a completely different team and we hope to go through," Lavezzi told the official Uefa website.
Javier Pastore netted a vital third goal for PSG in the closing stages of the game to give the French champions a two-goal lead ahead of the return and Lavezzi has underlined the importance of his compatriot's strike.
"The goal at the end was very important and it was important for the team to win a match like that. We'll go to London for the return leg with a little more peace of mind.
"I don't know if we're favourites as the second game will be very difficult. We'll try to win over there to get through the tie.
"Chelsea are very strong, and they know how to use the ball, so it's only normal that we found things tough at times tonight."
The return at Stamford Bridge takes place on April 8.