Russell fastest ahead of Drugovich, Ricciardo, Bottas and Stroll.
Russell, Drugovich, Bottas, Ricciardo, Piastri, Shwartzman, Gasly, Tsunoda, Sargeant and Vesti.
A 1m26.453s for Bottas in the Alfa Romeo, 0.3s off. Ricciardo slots into third.
Dennis, who is the reigning Formula E champion, moves into tenth on the softs.
Piastri moves to within 0.5s of Russell's top time.
Russell, Gasly, Vesti, Tsunoda, Sargeant, Piastri, O'Ward, Stroll, Ricciardo and Drugovich.
"Almost had the biggest accident of my life!"
Replays show him nearly crashing into the back of Sargeant.
Making the most of the softs, Sargeant slots into second, 0.6s behind Russell.
Piastri moves into the top three as well, 0.7s off the pace.
Russell, Tsunoda, Ricciardo, Bottas, Sainz, Gasly, Sargeant, O'Ward, Vesti and Drugovich.
A 1m26.313s for Russell now on the mediums, putting him 1.0s clear of Tsunoda.
A tidy first lap from O'Ward to put his McLaren into tenth - the IndyCar driver is replacing Norris in FP1.
Russell, Sainz, O'Sullivan, Sargeant, Ricciardo, Bearman, Magnussen, Tsunoda, Vesti and Stroll.
A 1m27.673s for Russell puts him 1.7s clear of Magnussen.
Sainz now slots into second behind Russell, 0.7s down albeit on the softs.
Only the two McLarens and Sargeant are currently in the pit lane.
Stroll has already stormed to the top of the timesheets with a 1m31.035s, running on the yellow-marked medium tyres.
60 minutes of running at the Yas Marina Circuit is now underway in Abu Dhabi.
There's 10 rookies in action.
Hello and welcome to the final F1 race weekend of the season.
It's nearly time for FP1 at the Yas Marina Circuit...