Reverend Aftab Gohar, of Abbotsgrange Parish Church in Grangemouth, was preparing to lead his own congregation when the attack occurred in All Saints Church in Peshawar, Pakistan, on September 22.
Mr Gohar lost his 79-year-old mother Iqbal, his 11-year-old nephew, nine-year-old niece, two uncles, cousins and friends in the suicide bombing that left 122 dead and around 170 injured.
Mr Gohar travelled to Peshawar to help bury his dead relatives and help care for others injured, and also took part in a memorial service at the city's cathedral.
He returned to Grangemouth this week, and is now appealing for help to bring his injured niece to Scotland for vital treatment to help her walk again.
Farah Javed, 23, who was training to be a beautician, was paralysed from the waist down in the attack.
Mr Gohar, 45, said that she had little hope of proper treatment or rehabilitation in her home country, and he is desperate to raise funds to bring her to Scotland for a better chance of getting the help she needs.
He said: "There is a problem with Farah's spinal cord tissues and she's paralysed from the waist down. Doctors say there is nothing they can do there and she will remain like that. I don't want to leave her in this state."
He added: "The visa policy is very strict and I need to consult with doctors to find out what the possibilities are. Then we need finances, sponsorship for her and her mother to come here, and the cost of her treatment."