The Wolfsburg attacker was in impressive form scoring two headers as the Balkan outfit secured a valuable three points to go top of Group C following Italy and Spain's draw earlier in the day.
"It was very important we scored an early goal," Mandzukic said in the post-match press conference
|5/1||Mario Mandzukic is 5/1 with William Hill to finish top goal-scorer at Euro 2012|
"It was not an easy match, it was a hard match. Our coach showed us everything about the Irish team, we did our best and deserved a victory."
"I still can't believe what we just did, it was a fantastic victory. We knew it would be a tough match but we team responded excellently and we achieved a great victory."
"Is this the best match of my life? I must thank the coach first because he gave me a chance to play and then I really played a good match. I scored twice but I also must thank my great team-mates."
Slaven Bilic's side now have a fantastic chance to progress to the quarter-finals and will hope for another positive result when they return to Poznan to play Italy on Thursday June 14.