Phrases such as "You deserve to be in this final", "You have been on a journey" and "Pick up the phone" are among the favourites to be heard on the ITV show, according to Paddy Power.
To win the bet, fans must correctly predict the exact cliché used by Nicole Scherzinger, Gary Barlow, Tulisa Contostavlos or Louis Walsh.
"Shamazing" is 20/1 to be the first cliché, while "I just hope the public vote for you" is 7/1.
"Picked the wrong song" can be backed at 25/1 and Louis Walsh's much-used "You remind me of a young..." is 40/1.
An outside bet is "Bring back Rylan" at 40/1.
The X Factor final takes place on Saturday and Sunday at Manchester Central.
James Arthur, Christopher Maloney and Jahmene Douglas are the three singers hoping to triumph.
Photo gallery - X Factor finalists switch on Downing Street Christmas tree lights:
Copyright: PA Images Lewis Whyld/PA Wire