Three-time Ballon d'Or winner Cristiano Ronaldo is undoubtedly the star attraction of the Portugal side, but he has scored in just one of their four matches at the tournament so far.
"Football is about teamwork. There is no team where just one player decides on the outcome of the match," he told reporters.
"I think Portugal present themselves very well as a whole team, and their players all want to achieve success tomorrow.
"For us, we need to look not only at Cristiano Ronaldo but all the players. They represent a very high level and we need to play at a high level ourselves."
The winner of Poland's match with Portugal will face either Wales or Belgium in the semi-finals.