Ulster will welcome the French powerhouses back to Belfast for the first time since December 2023.
In Round 2 the following weekend, the province will take on BKT United Rugby Championship opposition in Cardiff Rugby at Arms Park in the Welsh capital.
In Ulster's first away fixture of 2026, Round 3 sees the Ulstermen take on South African side, Toyota Cheetahs, at an unconfirmed venue in Europe on Sunday 11th January.
The pool stage will conclude with a home fixture against French Top14 side, Stade Francais, on Saturday 17th January.
Ticketing information for Ulster's two home matches will be released in due course.
The full list of Challenge Cup fixtures can be viewed here.
EPCR Challenge Cup | Pool 3 fixtures
Round 1: Ulster Rugby v Racing 92, Friday 5th December, Affidea Stadium, 8pm
Round 2: Cardiff Rugby v Ulster Rugby, Saturday 13th December, Cardiff Arms Park, 8pm
Round 3: Toyota Cheetahs v Ulster Rugby, Sunday 11th January, TBC, 4.15pm
Round 4: Ulster Rugby v Stade Francais, Saturday 17th January, Affidea Stadium, 1pm