Sergio Sette Camara has claimed pole position for the Formula 2 feature race, which saw two red flags at the start and toward the end of the session.
As the cars returned to the pit lane after the yellow flags were deployed, Nikita Mazepin emitted a cloud of smoke in the pit lane as his engine gave up.
Another red flag was deployed when Ralph Boschung stopped on the circuit before the Mistral Straight, putting him out of running towards the end.
Sette Camara's fastest lap read a 1:43.024, and he was trying to approve on the time when he spun in the final sector, destroying his lap. However, it didn't matter as his rivals didn't have enough to displace him.
Callum Ilott, who has been building in confidence recently, managed the fifth fast time after struggling earlier in the session while pushing.
Schumacher's teammate Sean Gelael rounded out the top ten, trailing Dorian Boccoalcci by less than a tenth of a second. The gap between Schumacher and Matsushita read just 0.005s.
As they didn't set timed laps, Alesi and Mazepin will line up in 19th and 20th for the start of the race on Saturday.
Bahrain International Circuit - Winter testing