Cristiano Ronaldo, right, gets past the Czech defenders Michal Kadlec, left, David Limbersky, centre, and Tomas Sivok during the quarter-final match.
Cristiano Ronaldo, right, gets past the Czech defenders Michal Kadlec, left, David Limbersky, centre, and Tomas Sivok during the quarter-final match.

Euro 2012: Facing Cristiano Ronaldo a 'beautiful challenge'