Petkovic said that he is keen to avoid a long trip to Russia, but otherwise there are no teams that he specifically wants to avoid.
Zenit St Petersburg and Rubin Kazan are the only Russian teams left in the draw following Newcastle United's victory over Anzhi Makhachkala.
"Every team in the draw from now on is strong," Football Italia quotes the Bosnian as saying.
"I'd only really want to avoid a trip to Russia because of the journey and the weather.
"Are Lazio the team to beat now? Other teams have to worry about us."
The quarter-final draw takes place later today.