The Algerian played five matches (Weeks 6 to 10) and scored as many goals with one assist, and spent a total of 385.0 minutes on the pitch.
Xavi-coached Al Sadd have now lost three out of their last four QSL matches.
Rui Faria's side took their tally to 26 points, four ahead of second-placed Al Rayyan.
Diego Aguirre coached Rayyan are second in the table on 22 points.
The Lions will miss the services of Rodrigo Tabata against Al Shahania.
Duhail can regain top spot with a victory against reigning champions Sadd on Saturday.
Abel Hernández scores as Al Ahli defeat Umm Salal.
The Lions defeated Al Sailiya 2-0.
Hani Taleb Ballan, Board Member of the QFA and CEO of QSL, received the honorary shield from Dr. Yousef bin Mohammed Al Hor, Chairman of the Gulf Organisation for Research and Development.
Muntari and Edmilson scored for Duhail in a 2-1 victory.
It was Arabi's second straight defeat after a bright start to the season.
Al Duhail SC take on Al Gharafa in another tough encounter.
Captain Rodrigo Tabata scored a double as Rayyan defeated Qatar SC 5-0.
Al Arabi hope to overcome the absence of injured Aron Gunnarsson when they take on Al Gharafa.
In the other matches, Qatar SC beat Al Sailiya 4-0 while Al Arabi and Al Khor played out a 1-1 draw.