They play Bulgarian side Ludogorets in Tallaght.
Shamrock Rovers manager Stephen Bradley insists they can maintain their interest in the Champions League qualifiers.
The Hoops trail Bulgaria's Ludogorets by three goals to nil ahead of the second leg of their second round qualifier tonight.
Rovers are guaranteed a spot in the Europa League qualifiers regardless of the result.
Kick off at Tallaght Stadium is at 8pm.