Nasr are bottom of their group with three points from four games, ahead of tonight's clash with Iranian giants Sepahan.

Their only win came against the two-time reigning Qatari champions Lekhwiya, who are third with six points.

Bresciano has urged his team-mates to show the same spirit they did on their Champions League debut in Isfahan, when they frustrated Sepahan until the 84th minute before a Bruno Cesar goal gave the hosts three points.

"The first game we played against Sepahan in Iran, we saw that they are a very strong team," Bresciano told The National newspaper.

"They are probably one of the favourites for the group and also to win the Champions League.

"But we demonstrated we could compete against these teams. We did hold off for 85 minutes there; they scored in the last five or six minutes of the game.

"But for us, this is probably the most important game because this is the last chance we have. It is a must-win game for us if we want to continue in this competition and have a chance of qualifying for the next phase.

"Without a win, we can consider ourselves out. So if there is going to be a future in the Asian Champions League for Al Nasr this year, it all depends on this game."

But Al Nasr go into tonight's clash with injury doubts hanging over two of their stars.

Champions League joint top scorer Amara Diane and star foreign striker Luca Toni are both doubtful.

Diane, who has scored all four of Nasr's goals in the Champions League, missed the Pro League match against Al Wasl last week with a foot injury.

Toni looked good on his return in that game after almost a month out with an elbow injury, but the Italian's left hand was heavily bandaged.

Nasr must win to keep alive their hopes of progressing in the competition and Walter Zenga, their coach, was putting on a brave face.

"I don't want to say that because of injuries, or because some players will not play, we have lost the game," Zenga said.

"We got 20 good players and we have been preparing well. I am not like other coaches who cry when they lose a game because of injuries to one or two players."