The Italian champions won the first leg 3-0 in Glasgow last month.
Lennon has admitted that while it would take a "minor miracle" for his side to qualify for the quarter-finals, the Bhoys could still win on the night.
"We are capable of winning the game and that's what we'd like to do," Goal.com quotes Lennon as saying.
"We have to get a foothold in the game. If we create as many chances as we did at Celtic Park then we'll be in for a good night.
"The pressure is off, so we need to try and restore some respectability. If we can win in Italy it would be a fantastic achievement by this team. To qualify would take a minor miracle."
The second leg takes place in Turin on Wednesday evening.