Morbidelli takes pole as Yamaha dominate Catalonia MotoGP qualifying
"Beating Fabio on a qualifying lap is good because it means that you are very fast. I wanted to have a very good lap and tomorrow we will try to have a good race," said Morbidelli, who sits fifth in the championship standings.
Valentino Rossi, who will drop down to Yahama-SRT from the factory team next season following the announcement of his one-year contract extension on Saturday, will take third place on the grid.
It will be the first time in over a year that Rossi, 41, will start a Grand Prix from the front row.
"It's a really great result to be in the front row, especially today which is special because I signed a contract for next year," said Rossi.
It was a disastrous day for current championship leader Andrea Dovizioso, who is only one point ahead of Quartararo and Maverick Vinales but will start Sunday's race 17th on the grid.