The Markazi Ulema Council launched the initiative to provide impartial Sharia-based guidance while Pakistanis are unable to approach ulema in mosques.
A charity arm of the party has been helping disinfect mosques, churches, temples and gurdwaras throughout the country.
Minorities in Pakistan have been attacked by militants in the past.
The historic mosque had been closed to women for almost two decades because of terrorist activity.
The group aims to build a safe platform for youth -- regardless of gender, colour, creed, caste or religious beliefs -- to celebrate their diversity.
Gains in security made this year's Christmas celebrations especially sweet.
The celebration of such events will also build the narrative that minorities and those in the majority are united against militancy in the country, observers say.
'I am confident that Buddhists from across the world will visit Pakistan as it is safe for foreign tourists,' a top monk told gatherings in Peshawar and Taxila.
Initiatives include the visa-free entry of 5,000 Sikh pilgrims daily from India through the Kartarpur Corridor.
The government signed an agreement in September with the Ittehad-e-Tanzeemat-e-Madaris Pakistan (ITMP) to regulate madrassas and halt the spread of religious intolerance.