Nani's 21st minute goal was disallowed by video assistants because a Portugal player was offside in the build up to the goal.
And two goals in the final five minutes signified a insane end to a thrilling game and while Portugal feel robbed, a draw was probably the just result.
Host Russia tops the group with three points after defeating New Zealand 2-0 in the opening match of the FIFA Confederations Cup on Saturday.
Florentino Perez on David De Gea moving to Real Madrid
The 70-year-old has confirmed that his club has been keeping a close eye on Monaco's Kylian Mbappe and AC Milan goalkeeper Gianluigi Donnarumma .
The result puts the sides level on one point each in Group A, behind hosts Russian Federation, who defeated New Zealand 2-0 in their opening game clash in St. Petersburg on Saturday. Find us on Facebook too!
But the newly introduced Video Assistant Referee called the referee's attention to Nani being in an offside position, leading to the goal being ruled out.
A four-time Ballon d'Or victor, the 32-year-old Ronaldo is the top European soccer player.
"The team continue to believe in qualification, we have great possibilities, because there are still two games left". That's hard to say for sure, as it's possible Cristiano was having a go at the referees, those in charge of the VAR technology, or perhaps the press at large.
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In a White House statement, Trump said, "A lot of bad things happened, but at least we got him home to be with his parents". They believe respiratory arrest led to his condition, which is caused by a lack of oxygen and blood in the brain.
"The VAR tests during this Confederations Cup are also helping us to improve the processes and fine-tune communication", Infantino acknowledged.
Portugal had the ball in the net shortly before the midway point in the net as Cristiano Ronaldo saw his volley acrobatically turned onto the crossbar by Mexico goalkeeper Guillermo Ochoa.
Mexico controlled possession and spent more time in Portugal's area, but the Euro 2016 champions were a constant threat on the counterattack in front of 34,372 fans at the Kazan Arena.
The Portuguese sports daily A Bola published a front-page story Friday saying that Ronaldo was upset with the accusations made against him and that his decision to leave Madrid was "irreversible". Hector Moreno headed in off the post from a corner to give Mexico an injury time equalizer, ensuring a share of the points.
Ronaldo only leaving if a club pays €1billion exit clause, insists Perez
Perez's opponents have criticised reforms in the club statutes which have toughened criteria for aspiring candidates. De Gea has continued to be linked with Real but Perez said: "For the time being, we haven't spoken to De Gea".
'We are calm and we have to think about the next game. The image used was one of Ronaldo winking to his teammates when former Manchester United teammate Wayne Rooney was sent off in a game between Portugal and England at the 2006 World Cup.