Cristiano Ronaldo
Ronaldo and Portugal were frustrated in Group F openerGetty

Cristiano Ronaldo has slammed Iceland's "small mentality" and accused them of over-celebrating their historic draw with Portugal.

Competing in their first ever game in a major international tournament, Iceland, a nation with a population of just 330,000, provided a hugely credible performance in their Euro 2016 group F opener against the 2004 finalists.

Former Manchester United winger Nani gave Portugal the lead in the first-half, before Birkir Bjarnason capitalised on some woeful defending to equalise on the night.

Lars Lagerback's side impressively dealt with the Portugal attack, sparking wild scenes of celebration among the travelling Iceland support at full-time.

But against the competition's smallest nation, one of the planet's biggest stars was in no mood to hand out praise.

"Iceland didn't try anything," Ronaldo told reporters post-match, the Guardian reports. "They were just defend, defend, defend and playing on the counterattack. It was a lucky night for them. We should have three points but we are OK.

"I thought they'd won the Euros the way they celebrated at the end. It was unbelievable. When they don't try to play and just defend, defend, defend, this in my opinion shows a small mentality and they are not going to do anything in the competition."

Ronaldo, who equalled Luis Figo's record 127 caps for Portugal on Tuesday night, missed chances in both halves, including a header from six yards out in the closing 10 minutes of the contest.

Portgual coach Fernando Santos was also forced to deny in his post-match press conference that the Real Madrid star refused to shake the hands of his opponents' after the final whistle.

"I didn't see that at all. I was watching the players," Santos told a news conference. "He greeted the Portuguese crowd – that was amazing. We wanted to give our crowd a win, they supported all through the match. That's not what I saw. I don't think that's true at all."