The 2021 FIFA Refereeing International Lists was released for each country. From Pakistan, the referees and assistant referees are:
Muhammad Ahmad Rauf
Irshad ul Haq
Assistant Referees (5):
Many congrats to all who made this important and exclusive list!
Full PDF document from FIFA: https://resources.fifa.com/image/upload/2021-fifa-list-of-international-match-officials.pdf