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.
Brexit Minister: No Doubt Britain Leaving EU
Mark Carney made the direct link between "weaker real income growth" and the process of leaving the European Union . Economic data is beginning to lend extra weight to the argument for a softer approach to Brexit.
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.
Talks on British exit from European Union begin in Brussels
Both sides were keen to stress they were entering the talks, which they hope will reach agreement in autumn 2018, in good faith. Barnier however said that "a fair deal is possible and is far better than no deal - that is what I said to David today".
"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.
Dodgers' rookie Cody Bellinger becomes fastest to 21 HR-mark
To put that in perspective, Kershaw had allowed only four earned runs in his previous three starts combined. Robert Gsellman gets the start for the Mets on Tuesday opposite RHP Brandon McCarthy for the Boys in Blue.
'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.