Ronaldo concedes they're in a difficult group.
"Portugal's priority is to reach the next round because we are in the toughest group of the Euro with the Netherlands, Germany and Denmark, who eliminated us in the playoffs. These games will be difficult, but I'm confident we'll reach the next round. We know we're not favourites, but that's better," he said.
"I don't think there will be any surprises in the Euro because Spain are very strong and there are other tough opponents."