Salah was one of several players targeted by laser pens shone form the crowd as he prepared to take his penaltyEgypt have lodged an official complaint against Senegal in which they claim their team was subjected to racism and "terrorised" by home fans in Dakar.
Sadio Mane's winning shootout penalty sealed Senegal's World Cup place with his Liverpool team-mate Mohamed Salah among those to miss for Egypt.
Egypt captain Salah was one of several visiting players targeted by green laser pointers during the shootout.
It is also claimed the Egypt team bus was attacked, causing injuries.
In a statement, the Egyptian Football Association [EFA] said it had lodged a formal complaint against its Senegalese counterpart before the match, filing this with Fifa, the Confederation of African Football [CAF], the match observer and the security official.
"The Egyptian team was subjected to racism after the appearance of offensive banners in the stands aimed at the players, specifically Mohamed Salah," the statement added.
"Moreover the Senegalese fans terrorised the Egyptian players by throwing bottles and stones at them during the warm-up, as well as attacking the Egyptian team bus, which caused glass shattering and some injuries, which was documented with pictures and videos attached to the complaint."
The Egyptian Football Association claim their team bus was attacked and posted a picture of a cracked window on InstagramThe EFA shared images of the damage to the team bus on Instagram, along with images of the offensive banner directed at Salah.
Dakar's new 50,000-seater Stade Me Abdoulaye Wade was filled to capacity as Senegal beat Egypt 1-0 to make the score 1-1 on aggregate after extra-time in the World Cup play-off match.
The Africa Cup of Nations champions once again got the better of Egypt in a shootout, six weeks on from their triumph in the Afcon final, winning 3-1 on penalties to secure a place at the Qatar tournament in November.
As Liverpool forward Salah stepped up to take his penalty, green lasers could be seen shining on his face before he fired his effort over the crossbar.
At full-time, the 29-year-old had to be escorted down the tunnel by security personnel as supporters threw objects from above.
Fifa's disciplinary body is analysing reports from the game before deciding on any next steps to be taken.
President of the Senegalese Federation, Augustin Senghor - who is also the vice-president of CAF - said he would await official reports on the incidents.
"From the stands, I didn't pay attention to the projectiles thrown," Senghor said. "About the lasers, if it happened this is a first in Senegal. But we know that in Cairo there were a lot of these and [they are used] often in specific countries. Senegal isn't used to that."
He added: "In my opinion, I didn't see during this game something that could be considered as chauvinism because the Senegalese are known to be very welcoming."
