An undefeated 62 by opener Rob McKinley ensured Instonians reached the Challenge Cup final, but he lost rather more partners than he would have liked.
Shane Dadswell hurried the Shaw’s Bridge side to their target with 41 off just 17 balls (three fours, four sixes) but Matthew Humphreys took two wickets in two balls, albeit with just five runs required, to set up a nervous finale.
Ben Rose, however, hit the winning boundary with 14 overs to spare.
Their winning target of 188 was much more than expected when, after winning the toss they reduced Lisburn to 76 for six but 44s from Nigel Jones and David Miller plus 47 not out from Josh Manley saw them bat through to the 48th over.
James Magee and Cian Robertson each took three wickets.
Waringstown eased past Woodvale to win their semi-final by eight wickets.
The match was decided by Daniel van der Merwe taking three wickets in five balls, including Ruhan Pretorius first ball and Ludwig Kaestner for nine.
That left the home side on 46 for five although they struggled through to 121, the total proved no problem for Waringstown, despite losing Adam Dennison to the second ball of the innings.
James McCollum dominated the scoring, finishing 71 not out, having hit 10 fours and two sixes.
The final will be at Stormont on Friday August 8th (11am).