A late double salvo from Balde Keita and Felipe Anderson ensured Lazio overcame Torino to remain on course for European football next season.
Ciro Immobile's 17th goal of the season put the Biancocelesti in front just before the hour, but a Maxi Lopez equaliser with just over 15 minutes left to play looked as if it had bagged the Granata a point.
However, three minutes from time a stunning Keita curler from well outside the penalty area got the better of Joe Hart and nestled in the top corner.
Then on the stroke of full time, Anderson was played in on goal and stoked the ball home to cap off an impressive evening for Simone Inzaghi's men.
Lazio move up to fourth spot, following a fourth consecutive win, and are just four points being Napoli who sit in Serie A's final Champions League qualification place.
