Portugal are currently third-placed in Group 1 and the Selecao needs three points in order to keep their World Cup hopes alive.
“It’s a must-win game, and I hope that Portugal will claim a positive result,” Ronaldo told A Bola.
“Our team is feeling better and better.
“Of course we don’t feel relaxed at all regarding our latest results, because we are yet to match our targets, but I am hopeful we will soon.
“Portugal’s team has played very well in the past, and from now on it’s our turn to improve our football.”