The film titled Amazing Grace tells stories of God's deliverance of Egypt's churches during the period when Christians were victimised in a wave of attacks by members of the Muslim Brotherhood. It was the worst attacked suffered by Egyptian Christians since the 14th century.
The 12 minute documentary, produced by Release International, a ministry which serves persecuted Christians worldwide, was filmed undercover on a tourist camera.
"A very powerful story, powerfully told," said Festival director Ray Horowitz of the film, which was selected as the winner from among 200 entries.
Cameraman and director Andrew Boyd spoke of the filming experience: "Journalists were being turned away from Egypt, so Release took in only the kit we thought we could get away with – a cheap camera, a voice recorder and a £5 monopod. We needed to keep a low profile."
"It is an immense privilege to be able to report on the persecuted church, he added. "These are the strongest stories in the world, of faith under fire. These courageous Christians are not just the persecuted church, they're the overcoming church."
"The faith, courage and determination of the Egyptian Christians is astonishing, as friends and neighbours turned against them to burn them out of their homes and churches. The Amazing Grace of the title is the grace and the power to forgive their attackers and remain in Egypt to serve the country they love and the people they love," he continued.
One of the stories told in the documentary is of Thomas, the Coptic Bishop of Minya, who overcame a thousand-strong mob armed with guns and Molotov cocktails who tried to destroy his cathedral. He turned them away with nothing more than faith and soapy water.
According to Release International 87% percent of the population in Egypt are Muslim, while an estimated 9-12% are Christians.
Amazing Grace is available from the Release International website at www.releaseinternational.org