Last-gasp Keirrison goal earns Fiorentina draw
The Rome club had been in front from the seventh minute when defender Sebastiano Siviglia struck a remarkable back-heeled volley inside the far post from a corner.
Keirrison earned a point for the visitors, whose injury list included Italy forward Alberto Gilardino, but did not really revive their faltering bid for European qualification.
They are 10th with 35 points before the rest of the league programme on Sunday, six points off fourth place, which brings a spot in the Champions League qualifying round, and five points away from sixth and a spot in the Europa League qualifiers.
Fiorentina's form has plummeted recently as they battle in Serie A, the Italian Cup and the Champions League, with the return of their last 16 tie with Bayern Munich coming at home next month after they lost the first leg 2-1.
Many sections of Rome's Stadio Olimpico were almost empty because several groups of Lazio fans boycotted the game in protest at the club's management.
Earlier on Saturday, Catania boosted their top-flight survival hopes by thumping Bari 4-0 at home to move four points clear of the relegation zone.