Goalkeeper Hannes Thor Halldorsson had more touches than any other Iceland player in the first half (30).

Portugal only had five shots on target though.

Image source, EPA

Vincent Kompany
Belgium and Manchester City captain

"I was expecting some stoical defending from Iceland, to close the ranks, but Portugal were getting through quite easily. If that's the way they continue to approach the game in the second half, they'll struggle."

Portugal lead at the break thanks to a familiar face for Manchester United fans. Watch the goal here...

Alan Shearer
Ex-England captain on BBC One

"It might have been different had Gylfi Sigurdsson scored his early chance. That's all Iceland have had. 

"Portugal have dominated and could have had two or three goals. Iceland will have to chase the game at some stage."

Chris Waddle
Former England winger on BBC Radio 5 live

"Portugal could have put this game to bed already, with the chances they've had."

And that's the last act of the first half as Turk Cuneyt Cakir blows his whistle to send the players in at half time.

Image source, EPA

Cardiff's Aron Gunnarsson launches a long throw into the Portugal box, but it's easy for Vieirinha to jump up and head away.

70% possession for Portugal in the first half so far, they're hogging the ball like the year 11ss used to do in the playground at school.

Year 7s Iceland have put up a good fight, but their opposition's class is becoming more and more evident.

JB: This is what happens when Nani is played for a full season. He maintains form as with 2011 when he was Man Utd's standout player that season. Bit parts for the next 3 years and I'm still gutted he's gone. Great talent. Not Ronaldo, but he doesn't need to be.

Portugal midfielder Joao Moutinho tries a dipper, but his strike from around 30-yards out bounces in front of the Iceland goalkeeper and straight into his arms.

Safe hands.

Image source, EPA

Vincent Crans: Offensively Portugal are looking like one of the stronger teams. Defensively however a bit amateurish at times

Nani showing shades of his time at Manchester United as he breaks clear on the counter-attack.

His mate Pepe is galloping right beside him all the way to the opposition penalty area, but Nani's cross into the box is disappointing, straight into the arms of the Iceland goalkeeper.

Don't look towards Pepe, Nani. Just don't do it. The Real Madrid man has to scamper all the way back to his position after a wasted trip up field.

Chris Waddle
Former England winger on BBC Radio 5 live

"Iceland have responded well. They've upped the tempo, but Portugal are sitting too deep. We've seen plenty of sides do that once they go ahead at these Euros already, and it only creates problems."

You will not see this everyday, so watch it again here. Just before the goal Cristiano Ronaldo can't convert a wonderful ball over the top of the Icelandic defence. 

Iceland doing their utmost to get back on level terms and earn another corner.

Gylfi Sigurdsson swings it in, but the responsible Cristiano Ronaldo doing his duty at the back, heading away the Swansea man's kick.

Davy: Brilliant goal Nani!

Rob Elmore: Is this the same Nani that used to play for Man Utd?

Iceland are not giving up though.

Birkir Bjarnason leads the charge as he clips the ball into the box to earn a corner off Pepe's bald head, but the corner is poor and the ball drifts out of play at the other end.

That goal means Nani has scored in back-to-back competitive international games for the first time since September 2008.

Iceland fans fall silent, Portugal supporters making all the noise now.

Image source, EPA

Nani has been so much more involved in play than Cristiano Ronaldo as our touch maps show.

Image source, Opta

Image source, Opta

Iceland on the ropes now and Portugal looking to knock them out.

Andre Gomes's long-range dipping strikes comes off a defender for a second corner in as many minutes.

Can the minnows hang on? Goalkeeper Hannes Halldorsson does just that to the resulting set-piece and relieves the pressure...for now.