Leicester Tigers captain Murphy, who played the full 80 minutes, touched down in the second half in front of 3,168 spectators as Ireland continued their warm-up for the World Cup.
The Ireland Select XV led 14-3 at half-time through tries by Mick O’Driscoll and former Tigers lock Leo Cullen.
Tigers full-back Murphy scored the first try of the second half before further scores for Fergus McFadden, Ian Keatley and Denis Hurley.
Ireland head coach Declan Kidney will announce Ireland’s World Cup squad on Monday.
Ireland Select XV:
15 Geordan Murphy (Leicester)
14 Johne Murphy (Munster)
13 Darren Cave (Belfast Harlequins/Ulster)
12 Ian Keatley (Munster)
11 Fergus McFadden (Old Belvedere/Leinster)
10 Paddy Wallace (Ballymena/Ulster)
9 Isaac Boss (Terenure College/Leinster)
1 Tony Buckley (Sale)
2 Sean Cronin (Leinster)
3 John Hayes (Bruff/Munster)
4 Mick O’Driscoll (Cork Constitution/Munster)
5 Leo Cullen (Blackrock College/Leinster)
6 Kevin McLaughlin (St.Mary’s College/Leinster)
7 Niall Ronan (Shannon/Munster)
8 Denis Leamy (Cork Constitution/Leinster)
Replacements used: 21 Denis Hurley (Cork Constitution/Munster) for J Murphy (28 mins); 20 Conor Murray (Garryowen/Munster) for Boss (47); 17 Marcus Horan (Shannon/Munster) for Hayes (50); 18 Donnacha Ryan (Shannon/Munster) for Cullen; 19 Chris Henry (Ballymena/Ulster) for Ronan (both 61); 22 Ian Whitten (Ballymena/Ulster) for Keatley; 16 Damien Varley (Garryowen/Munster) for Cronin (both 73)
