Martin Finn gave a scoring masterclass as St Gabriel's booked their semi-final spot at Ruislip.
The London forward fired an outstanding 2-9 for the victors, his two goals coming within five minutes of each other early in the second half to kill off Fermanagh side Lisbellaw St Patrick's.
Lisbellaw were handed an early chance to seize control when they were awarded an 18th-minute penalty. However, John Duffy's effort was well saved by goalkeeper Aidan Ryan, who produced a number of superb stops before the break.
Cork native Finn hit five points without reply to give Gabriel's a 0-10 to 0-4 interval lead, but Lisbellaw were given hope when Sean Corrigan flicked a long ball past Ryan four minutes after the restart.
Finn replied almost instantly, rifling a shot to the top corner of the Fermanagh side's net, and repeated the trick soon afterwards to put the Londoners in control.
Lisbellaw's cause wasn't aided by the dismissal of defender Karl Kehoe for two bookable offences, and John Grealish exploited the extra space to register a third maximum on 40 minutes.
Colum Rice hit a second goal for Lisbellaw but fellow substitute Gerard Wynne capped off a ruthless Gabriel's display by raising the green flag for a fourth time, setting up a semi-final date with Galway's Killimordaly.
Scorers – St Gabriel's: M Finn 2-9 (0-5f, 0-2 '65'), J Grealish, G Wynne 1-0 each, S Egan, K Walsh, N Rogers 0-2 each, P Sloane, C Sexton 0-1 each. Lisbellaw St Patrick's: S Corrigan 1-1, J Duffy 0-4 (3f, 1 '65'), C Rice 1-0, D McGarry 0-2.
St Gabriel's – A Ryan; T Lally, B Costello, F Tierney; E McKeigue, PJ Rowe, N Coady; E Cooney, N Rogers; P Sloane, S Egan, K Walsh; M Finn, L Hands, J Grealish. Subs: M Fitzsimmons for Tierney (42), G Wynne for Cooney (50), I O'Connor for Hands (53), C Sexton for Egan (54), T Moroney for Coady (54).
Lisbellaw St Patrick's – D McPhillips; N Carson, F Bannon, D Teague; A Breslin, M Slevin, K Kehoe; R Bogue, J Duffy; JP McGarry, M Teague, P Timoney; S Corrigan, D McGarry, C Corrigan. Subs: B McGarry for Timoney (37), C McElroy for Teague (42), S Mulholland for Breslin (54), B Jones for C Corrigan (60).
REF – C Browne (Galway)