Kelly, who has been outstanding for Munster in recent months, had entertained notions of playing until it was diagnosed that he had indeed fractured a cheekbone.
Munster completed their preparation for Saturday's Celtic Cup final with a morning training session at Musgrave Park.
Good news for Munster was that Ronan O'Gara once again took a complete part as did Shaun Payne and John Hayes all of whom picked up knocks against Leinster.
Munster travel to Dublin tomorrow afternoon
Llanelli Scarlets: Barry Davies; Garan Evans, Matthew J Watkins, Tal Selley, Aisea Havili; Ceiron Thomas, Dwayne Peel; Andy Powell, Gavin Thomas, Simon Easterby (captain); Chris Wyatt, Vernon Cooper; John Davies, Matthew Rees, Phil John. Replacements: David Maddocks, Aled Gravelle, Adam Jones, Gavin Quinnell, Mike Phillips, Gareth Bowen, Salesi Finau.
Munster: (squad) Shaun Payne, Mike Mullins, James Storey, Brian Touhy, Rob Henderson, Anthony Horgan, Paul Devlin, Ronan O Gara, Paul Burke, Jeremy Manning, Peter Stringer, Mike Prendergast, Marcus Horan, Eugene McGovern, Frank Sheahan, John Hayes, Donncha O'Callaghan, Paul O'Connell, Alan Quinlan, David Wallace, Anthony Foley (captain), Jerry Flannery, Gordon McIlwham, Trevor Hogan, Denis Leamy.
Referee - Joel Jutge.