Egypt were awarded a penalty in the 72nd minute after Salah was fouled inside box with VAR needed to confirm the foul took the place inside the box after the referee had initially called for a free-kick.
Egypt have to hope for the unlikely on Wednesday - a Saudi Arabia victory over Uruguay - if they are to have any chance of getting beyond Group A. Should Saudi Arabia fail to beat the South Americans, Russia will qualify for the last 16 and Egypt will be eliminated.
"In the previous match we thought he was fit but we have a final fitness test", said Egypt boss Hector Cuper.
"It is not an accident that we have two wins under our belt, we have a group of solidarity", said coach Stanislav Cherchesov.
It wasn't quite such a good start for Egypt, who were without talisman Mohamed Salah as they fell to a late defeat at the hands of Uruguay.
The Egyptian Football Association pushed the notion of Salah making a swift and successful recovery from his shoulder injury, having declared him fit for both their matches in Russian Federation.
"Every player battled today in every area of the pitch".
"It is very hard to know what would have happened (had he not been injured) but we know the quality he has".
Russian Federation made positive inroads down both flanks and Yury Gazinsky soon found space down the left, only to see his eventual cross rise just a matter of inches over the head of Dzyuba.
He added: "Probably I am being too bold - but we want to win the cup".
"It is hard to say this but in the World Cup you have to wait until the very last minute, although it's true that our chances are minimal".
The Liverpool attacker returns to the Pharaohs' starting XI following the shoulder injury he picked up in the 2017/18 UEFA Champions League final against Real Madrid, but the Egyptians will have wished he was available for their first game, which they lost 1-0 to Uruguay.
The start to the game witnessed an Egyptian side with a lot more attacking intent than we've seen in the previous games, with the team fully aware that the match is a must-win.
Oddschecker also indicates Salah remains one of the favourites to score his country's first goal in the competition, being given 4/1 chances of scoring a goal against the hosts.
Much was expected of the player of the year in England and Salah was certainly a potential star at this World Cup but, five days into the tournament, Egypt need a miracle to make the knockout stage. Salah's penalty opened Egypt's account for 2018.