Pazzini (left) is denied by Cuellar's block tackle at Ibrox
Rangers held Italian side Fiorentina to a goalless draw in the first leg of their Uefa Cup semi-final at Ibrox.
The visitors dominated possession for long periods but struggled to create clear-cut chances as Rangers held firm.
Martin Jorgensen fired straight at Neil Alexander in the Gers goal before Nacho Novo chipped over from 40 yards as Rangers improved in the second half.
Adrian Mutu had a 30-yard effort saved late on and the teams will now meet in the second leg in Florence on 1 May.
The Scottish side may have been on the back foot for much of the game.
But, as in the quarter-final with Sporting Lisbon, they will be pleased to have prevented their opponents from scoring an away goal.
Rangers, with such a fine away record in Europe this season, played like the away side for much of the contest as they sat back and let the Italians play.
Fiorentina, given so much time on the ball and continually gifted possession as Rangers seemed allergic to the ball at times, patiently probed for an opening.
In the early stages they had almost exclusive possession though Rangers' defence held firm, Mutu and Zdravko Kuzmanovic firing in shots from long range that failed to trouble Alexander.
Rangers played on the counter and solo frontman Jean-Claude Darcheville accelerated down the left only for his cross to be deflected into the arms of Sebastien Frey.
La Viola continued to press Rangers back and Jorgensen forced Alexander to save, but the visitors were worried by Darcheville breaking and twice he was fouled on halfway as he sought to turn and run into space.
The second time, Mario Alberto Santana was cautioned for his rugby tackle on the Frenchman, who was becoming frustrated with the close attention.
Mutu resorted to cheating just before the break, trying to convert a cross with a clear handball, though for some reason the referee decided not the book the former Chelsea striker.
As the second half wore on, Rangers looked more like a side who thought they could get something out of the game and they started to up the tempo.
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