They face RB Leipzig, Copenhagen and AC Milan respectively.
In the Champions League tonight, Celtic's players will wear black armbands in memory of those who lost their lives in the Creeslough tragedy.
Celtic face RB Leipzig in Group F at Parkhead from 8.
Real Madrid and Shakhtar Donetsk meet in the other Group game.
At 5.45, Manchester City play Copenhagen in Group G at Denmark
In the other match in that Group, Borussia Dortmund are up against Sevilla.
Chelsea take on AC Milan in Group E at the San Siro from 8pm.
Dinamo Zagreb play Red Bull Salzburg in the other tie in that Group.
In Group H, it's Maccabi Haifa against Juventus and Paris Saint Germain to face Benfica.
IRFU Investigate Online Racist Abuse Directed Toward Edwin Edogbo
Farrell Hits Out At "Keyboard Warriors" Aiming Abuse At Suncroft's Sam Prendergast And Jack Crowley
Monday Morning Sports Update
Kildare Football Team vs Derry
Tottenham Set To Appoint Igor Tudor As Interim Head Coach
Two League Of Ireland Games Postponed Due To Weather Conditions
ROI Begin Their National League Campaign Away To Kosovo On September 24th
Friday Morning Sports Update
