The celebration was cut short shortly after Salman Al-Faraj scored another penalty in the 6th minute of injury time to level things up for the Asians.
Egypt were seeking a first World Cup win at their third tournament appearance but finished bottom of Group A as they lost to Uruguay and Russian Federation, before a 95th minute goal by Salem Al-Dawsari saw Saudi Arabia claim a late win on Monday.
With the final kick of the game, Saudi Arabia snatched the winning goal, with Salem firing a low effort past El-Hadary from six-yards out.
As the game entered the final quarter, Housain Al-Mogahwi was given the chance to score his first global goal at the back post but the midfielder's header was tipped over the crossbar by El-Hadary.
After the Saudis had sloppily given possession away, Pharoahs talisman Salah made his way in between both centre-backs to latch onto a searching long pass, taking the ball down with a lovely trap before lofting a shot over the onrushing Yaseer Al-Mosailem. "Yes we lost all three matches but we lost two games with goals conceded after 90 minutes".
Igor Smolnikov was sent off for two quick bookings, the second a bad tackle on Laxlat in the 36th minute.
Senegal, Japan share the points in thriller
A draw between the two would be a great result for both Japan and Senegal , who hope to wrap up a knockout stage spot on Thursday. Japan as a team showed character and persistence to keep going after a poor first half and they got their reward in their opener.
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Not bad for the oldest player in World Cup history...
But the veteran's record-breaking afternoon got better in the first half as he faced Fahad Al-Muwallad's penalty. The decision was confirmed after a video review.
It was a fantastic save from El Hadary, who at the age of 45, makes his finals debut in Volgograd.
Just when a draw looked on the cards, Saudi Arabia finally found the breakthrough in the 95th minute when Abdullah Otayf met Mohammed Al-Breik's right-wing cross with a first-time layoff into the path of Al-Dawsari.
El Hadary saved Fahad Al Muwallad's first-half penalty but Salem Al Dawsari scored a victor for Saudi Arabia in stoppage time.