Imran Khan in his speech Wednesday warned extremists protesting the acquittal of Asia Bibi, a Christian woman convicted of blasphemy.
The festival of Sant Nenu Ram represents an example of interfaith harmony and religious coexistence for local residents and peace activists.
Twelve teams participated in the event organised by Peshawar Zalmi to promote religious harmony.
The festival, which fell on August 26 this year, draws Pakistanis of all religious beliefs and promotes inter-faith harmony, say observers.
Eid ul Adha will be celebrated on August 22 in Pakistan.
Authorities accelerated conservation and excavation work at Takht-i-Bahi this month with the goal of highlighting the archeological significance of Khyber Pakhtunkhwa.
The Taliban urged a boycott of the conference, but many clerics and scholars ignored the militants and issued a declaration saying that 'terrorism contravenes Islamic law'.
The initiative will raise the status of prayer leaders among society and reduce their vulnerability to extremist recruiters or others seeking to influence them, authorities say.
Suicide bombers, as well as those who support and train them, are traitors against the state and Islam, according to a newly issued fatwa.
The discovery of the roughly 1,700-year-old statue, carved from Kanjur stone, was announced in November.