The Italian side hold a 2-0 lead over Stuttgart and will reach the quarter-finals if they can hold on to their advantage, with Petkovic saying that they are capable of going all the way.
"This Lazio team wants to do as well as it can," Gazzetta dello Sport quotes Petkovic as saying. We want to win in Europe.
"We do not want to face this match without the right level of concentration. That is the danger and we are working on it. I told the lads that we must play to win.
"We must not underestimate this return match. It is possible to overturn a 2-0 defeat. See what happened with AC Milan?"
The match kicks off at 8.05pm.