Nam had scored the second and won a penalty for the third goal in the victory which sent Al Nassr out of the competition.
The suspension will rule the South American out of the group phase of next year's Champions League.
The South American was also fined $10,000 by the AFC. His Saudi club had already fined him an undisclosed amount for the incident.
(Reporting by Patrick Johnston; Editing by Amlan Chakraborty)
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