Dr Muhammad Taufiq Al Sattar led prayers for his wife Shehnila Taufiq, 47, and three teenage children, Zainab, Bilal and Jamil, in Dublin.
More than 1000 people attended the service in the Blanchardstown area of the city. "I am bird without any wings," said Sattar. "I have nobody with me now."
Eight people have been charged in connection with the deaths at Wood Hill, Leicester, on September 13.