Stefano claimed 6th starting spot, while Marciello - 9th.
Stefano Coletti mathematically still within the title fight.
With less than 10 minutes of the session remaining both Fabio and his main title rival, Sam Bird, were sitting in the pits preparing themselves for a final fast lap.
The Monegasque driver of team Rapax, Stefano Coletti is currently third in the classification.
All the cars were running the P Zero Yellow soft compound Pirelli tyres.
With the dirt asphalt still few rubberised, the monegasque driver has decided not to risk.
Racing Engineering: Fabio Leimer gave it his best shot for the pole but will start on the front row.
Stefano Coletti will try to make up the ground lost in the GP2 first race on Saturday.