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.
Judd Trump Has Been Beaten In His World Championship Quarter-Final
Number of Local GAA Fixtures Down For Decision This Evening
It's Gold Cup Day At Punchestown Today
Kildare Drawn Against Leitrim, Longford and Waterford In The Tailteann Cup
Leicester City To Return To The Premier League As Championship Title-Winners
Draws For The Sam Maguire And Tailteann Cup Take Place This Afternoon
Mark Allen Is Out Of The World Championships
Leinster Duo Garry Ringrose And Jimmy O'Brien Back In Action
