The Minnows Iceland made a fantastic debut as they held the mighty Portugal to a 1-1 draw on 14 June at Geoffroy Guichard stadium in Saint-Etienne.
The match saw Cristiano Ronaldo equal Luis Figo's record for the most number of appearances for Portugal - a whopping 127.
Gylfi Sigurdsson had almost put Iceland in the lead but Rui Patricio denied him the chance. However, Nani gave Portugal the lead when he calmly passed the ball through Halldorsson at the near post in the 31 minute to register the 600 goal to be scored at the European championship, NDTV reported.
The first half of the match kept both goalkeepers busy. Iceland levelled the match within five minutes at the start of the second half. Bjarnason volleyed his shot past Portugal keeper Patricio when he received Johan Gudmundsson's cross. This marked Iceland's first goal ever at a major tournament - a historic moment.
Portugal kept attacking and counter-attacking the minnows, but Halldorsson kept the balls away. Ronaldo headed Vierinha's cross, but found Halldorssons gloves instead.
Iceland will battle Group F leaders Hungary in Marseille on Saturday, while Portugal will take on Austria in their next Euro 2016 clash.