Against the run of play, the Republic pulled a goal back on 72 as Keane slotted a penalty after Shirokov had blotted his copybook with a needless challenge on the Republic skipper.
With Rangers doing little to trouble Vyacheslav Malafeev in the Zenit goal, the Russians were doing all the pressing and Zyrianov screwed wide of the near post after being set up for the shot by Roman Shirokov.
The plaintiff, Dmitriy Shirokov, is seeking to make the case a class action on behalf of 4, 577 people who, like Shirokov, received threatening letters for having allegedly downloaded copies of Far Cry, an action-adventure movie originally released in Canada in the summer of 2007 and in the U.S. in December 2008.