Ireland flanker Stephen Ferris was forced off with an ankle injury that could place in jeopardy his involvement in Ulster's Heineken Cup quarter-final against Munster.
Nonetheless, the northern province will go into the biggest game of their season with a decided pep in their step from a bonus-point 45-7 win over Aironi in the PRO12 League at Ravenhill last night.
Ulster move onto the same number of points as Glasgow, who were 31-3 too strong for a lethargic Cardiff Blues, Leinster's Heineken Cup quarter-final opponents, at Firhill. The Warriors are third on the basis of their superior points difference.
The pair now occupy play-off places before the Ospreys attempt to move back into the top four at home to Benetton Treviso this evening.
For Ulster, fly-half Ian Humphrey's beautifully delayed short ball sent centre Paddy Wallace over for the first touchdown. A penalty try soon followed off the back of a dominant scrum, and a Rory Best effort from a driven lineout made it three tries in the first half.
The five points were wrapped up in the 45th minute when centre Darren Cave wheeled around the outside of Aironi's depleted defence, and the process was rounded out by further tries from prop Tom Court and number eight Pedrie Wannenburg.
Edinburgh were able to do Ulster a favour by clipping the wings of the Scarlets 26-23 at Murrayfield, holding off a late charge by the Welsh club.