Cyriel Dessers rescued a point for Rangers as they held Olympiacos to a 1-1 draw in Piraeus on Thursday night.
Morocco international Ayoub El Kaabi gave the hosts the lead four minutes before the hour mark.
Dessers, however, equalised for Rangers in the 64th minutes with Vaclav Cerny providing the assist.
The Nigeria international has now scored nine goals and registered three assists in 18 appearances across all competitions for Philippe Clement’s side this season.
He was replaced by Hamza Igamane five minutes from time.
His compatriot, Leon Balogun was an unused substitute for Rangers.