Trézéguet came off the bench to help Egypt secure qualification for the Africa Cup of Nations Round of 16 on Wednesday night.
The Aston Villa forward replaced Omar Marmoush for the final 24 minutes as Carlos Queiroz's side beat Sudan 1-0 at the Stade Ahmadou Ahidjo in Cameroon.
22-year-old defender Mohamed Abdelmonem scored the decisive goal in the 35th minute, with the three points enough to seal second place in Group D and a route through to the knock-out stage of the competition.
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Egypt's next opponents are yet to be determined, with Ivory Coast, Equatorial Guinea, Sierra Leone and Algeria all set to fight for top spot in Group E on Thursday night.
The Round of 16 tie will be played at Stade Japoma on Wednesday, January 26 at 4pm, with the winners of that game to face either Morocco or Malawi in the quarter-finals.
