Portugal deservedly took the lead through Nani on 31 minutes, but Iceland managed to work a shock equaliser when Birkir Bjarnason emphatically volleyed home shortly after the interval.

Cristiano Ronaldo had a late header saved as the Portugal captain failed to inspire his nation to a win in their Group F opener.

Iceland also went close to scoring a winner when Alfred Finnbogason had a shot saved, however, they will be delighted to take a point into their next match against Hungary on Saturday (June 18).

Gylfi Sigurdsson almost gave Iceland the perfect start, only for his initial angled shot and follow-up to be saved by Portugal goalkeeper Rui Patricio on three minutes.

The early scare appeared to spring Portugal into life and having taken complete control of possession, they went close to opening the scoring through Nani in the 21st minute. 

The winger, who plays his club football for Turkish side Fenerbache, headed straight at the legs of Hannes Thor Halldorsson from Ronaldo’s delivery but he made no mistake 10 minutes later, sweeping Andre Gomes' cross into the back of the net.

Despite continuing to dominate until half-time, Portugal were punished five minutes after the restart when Bjarnason drifted behind Vieirinha to blast a volley past Patricio.

Nani came within inches of scoring his second of the night when he glanced Raphael Guerreiro's in-swinging free-kick narrowly wide on 71 minutes.

Ronaldo then wasted his best chance of the match when he headed Nani's cross straight at Halldorsson with five minutes remaining.

A stringing drive from Iceland substitute Finnbogason almost secured all three points and although it was palmed away by Patricio, it didn’t prevent his team holding on for a memorable draw.

The earlier game in Group F saw Hungary win their first match in a European Championship finals since 1972 with a shock 2-0 victory over 10-man Austria at the Stade de Bordeaux.

Adam Szalai’s first international goal since December 2014 and a late strike from Zoltan Stieber meant Hungary claimed all three points.

Austria started the game the brighter side and almost scored the fastest-ever goal at a European Championship finals as David Alaba's shot after 28 seconds hit the post.

Hungary managed to contain their opponents, however, and it was Szalai who broke the deadlock in the 62nd minute after slotting in Laszlo Kleinheiser's pass.

Austria’s Aleksandar Dragovic was sent off in the 66th minute for a second bookable before Stieber sealed Hungary's win with a composed dink in the 87th minute.

Hosts France are back in action tomorrow as they face Albania in their second Group A match.

Romania, meanwhile, go up against Switzerland looking to bounce back from their 2-1 defeat at the hands of France.

There is also one match in Group B between Slovakia and Russia, who have today been handed a suspended disqualification from the tournament by UEFA.

The country are facing the prospect of being thrown out should further crowd trouble occur at their matches.

The sanctions were imposed by European football’s governing body after violent scenes marred Russia’s opening match with England in Marseille, with the tie ending in a 1-1 draw.