Real Madrid's Portuguese forward Cristiano Ronaldo celebrates after scoring a penalty during the UEFA Champions League quarter-final second leg football match between Real Madrid CF and Juventus FC at the Santiago Bernabeu stadium in Madrid. Pic/AFP

Cristiano Ronaldo smashed home a penalty in the seventh minute of stoppage time to take Real Madrid through to the Champions League semi-finals on Wednesday, despite a 3-1 defeat on the night to Juventus after a remarkable comeback attempt by the Italians.