The Spurs midfielder assured that he will be at his best for his national side, but warned that he needs the help of his team-mates for the country to challenge at the Euros
The Tottenham midfielder revealed that Slaven Bilic's men are all eagerly anticipating their opening match against Giovanni Trapattoni's side following weeks of build-up to the tournament.
"I think there has been enough talk and it is now time to play," Modric told Sportske Novosti.
"Many of us in the squad are feeling a bit of anxiety, which I think is a good sign. I know there are a lot of expectations on the team and on me in particular. I have learnt to live with this pressure because it has been a while since people have put the responsibility on a single player.
"However it certainly isn't so, a single footballer cannot win or lose a game on his own. All I can say is that I will give my maximum on the pitch."
The 26-year-old is confident his side are superior to Ireland, but warned that they must show it on the field.
"Quality-wise, I am convinced Croatia are better than Ireland. Now it is up to us to prove it on the pitch," he said.
"The only thing we can promise is that every single one of us will fight like a lion and give more than our maximum. I always say this is the most important thing, giving it your all and being able to look yourself in the mirror after the game."
Croatia's Group C clash with Ireland kicks off at 20:45CET.