Head coach Richie Murphy says Ulster are ready for a “difficult” Vodacom URC duel with the Stormers in Belfast on Friday, following an emphatic European cup win. The Ulstermen were the first club to book their spot in the EPCR Challenge Cup final in Bilbao after seeing off the Exeter Chiefs 29-12 at the Affidea Stadium this past Saturday. “It’s probably one of the best performances we’ve put in all year,” Murphy told RTÉ Sport post-match. “To do…