The trip to Slovakia provides welcome respite from the turmoil of their Scottish Premier League campaign, which sees the champions languishing in fourth place and 10 points adrift of both Celtic and Hearts.
Alex McLeish, the manager, has already said he will not resign from a post he will have held for four years in December - if he does, in fact, survive that long. A win against Artmedia would buy him moretime, Prso believes: "Everyone has to do a little bit more and I think everything will be OK."
The Champions' League campaign had been the one highlight of what has been a difficult season. Rangers could not have asked for a better start, taking maximum points from the opener against Porto thanks to a battling 3-2 win.
However, Artmedia - conquerors of Celtic in the qualifying rounds - upset things last month when they held Rangers to a goalless draw at Ibrox. It was a game Rangers were expected to win and they head into tonight's meeting knowing they need to return to Glasgow with the three points.
No Scottish club has reached the knock-out stages of the Champions' League in its current form, but Prso believes Rangers can do just that."We know we still have a chance to qualify for the next round. We are quite confident we can do that."
The defender Jose-Karl Pierre-Fanfan will miss the game with a hamstring problem, but Sotirios Kyrgiakos, Julien Rodriguez and Francis Jeffers are all fit and available if needed.
Rangers (from): Waterreus, Klos, Robinson, Bernard, Ricksen, Andrews, Kyrgiakos, Malcolm, Rodriguez, Hutton, Ferguson, A Rae, Ricksen, Murray, Namouchi, Hemdani, Thompson, Jeffers, Prso, Lovenkrands, McCormack.