The Pharaohs were issued a real scare when Cavani forced another world-class save from El Shenawy and hit the post in quick succession - going into the last ten minutes of the encounter.
It will come as some relief to Egypt with Salah being the star of their team, and to the player himself.
The win puts Uruguay on three points in the group, while Egypt has zero points and is facing a must-win against Russian Federation in their second match. Egypt deserved a point in the end with how well they defended, but the late magic was enough and spoiled Salah's birthday. Uruguay defender Diego Godin, who plays in Spain for Atletico Madrid, did not take kindly to an "inopportune" question in a subsequent press conference asking if he meant to follow Ramos in giving Salah some roughhouse treatment.
Jose Gimenez headed in Carlos Sanchez's free kick in the 89th minute for a 1-0 victory over Egypt on Friday.
Egypt will be making its first World Cup appearance in nearly three decades today, but will be a sizable underdog against a Uruguay squad with plenty of star power.
Hosts Russia got the World Cup off to a flying start by hammering Saudi Arabia 5-0 in the opening game in Moscow.
Luis Suarez and Edinson Cavani give the two-time world champions exceptional firepower up front, having racked up 71 goals and 30 assists between them last season.
3 things we learnt from Iran 1 Vs 0 Morocco
His best performance was in 2010, when he led Portugal to the Round of 16 before being knocked out by eventual winners Spain. The strongest backline in Asia was only breached by Syria after Iran's place was secured in Russian Federation .
He said: "Mo Salah is an extremely important player for us, nobody can deny that".
UPDATE 2: Not one person predicted an Iran win, though a few were robbed of 10 points for the draw by their 95th-minute victor for a 1-0 victory.
The Sun predicts that Egypt will line up in a 4-2-3-1 formation while Uruguay will go for 4-4-2.
Cavani and Suarez didn't receive the support they needed and at times dropped back to midfield as playmakers, not a role for a duo that has combined for 93 worldwide goals. With a victory, Uruguay could reach the next stage with a game in hand against host Russian Federation on June 25.
It was all Uruguay as Cavani struck the cross bar in the 87th minute from a freekick after Elshenawy again managed to push the ball to the bar with his finger tips. And Cuper hinted on Thursday that it was the player who had the final say whether to play.
The 2018 FIFA World Cup is under way.