Boris Johnson is being urged to offer asylum to a 14-year-old Christian girl being hunted by Islamist death squads in Pakistan.
Catholic altar server Maira Shahbaz was abducted at gunpoint and gang-raped before her wedding to a 45-year-old man.
The girl is now on the run as a death sentence hangs over her head for breaking off the marriage.
A petition to provide Maira and her family asylum in Britain currently has more than 9,000 signatures.
Those backing the move remember the similar case of Asia Bibi, a Christian from Pakistan, who was hounded by Islamic vigilantes on her release from prison after false blasphemy charges.
Mr Johnson, a backbench minister at the time, led calls for Mrs Bibi to be given asylum after her eight years on death row but she later fled to Canada.
Maira appealed directly to Mr Johnson in a statement, saying: "I am very much scared due to threats to my life and my family. Please protect me."
The schoolgirl escaped her 45-year-old husband Mohamad Nakash Tariq, in August, five days after the Lahore high court ruled she had willingly converted to Islam.
The barber lived near her family in the city of Faisalabad.
The ruling sparked protests in Pakistan where, according to human-rights groups, an estimated 1,000 Christian and Hindu girls are kidnapped each year and forced to convert to Islam.
Maira claims she was abducted on April 28 and held prisoner in a basement where her captors drugged and raped her before forcing her to convert to Islam to marry Tariq - a claim he denies.
Sajid Christopher, a human-rights activist in Lahore, said: "Maira is aware that if her abductor finds out where she is, she will be taken and killed.
"Dangerous men have been calling at their home and their neighbours’ homes trying to find out where the family are."
Catholic charity Aid To The Church In Need launched the asylum petition on its website. Its UK director, Neville Kyrke-Smith, said: "It’s urgent that the Prime Minister acts to save the lives of Maira and her family. They are in grave danger."
Whitehall sources said concerns about the plight of girls in Pakistan had been raised last week by Foreign Office Minister Lord Ahmad during a meeting with Pakistan’s minister for human rights, Dr Shireen Mazari.
However, Home Office officials do not consider asylum claims lodged outside UK territory, instead advising those in need of protection to claim asylum in the first safe country they reach.
A government spokesman said: "Forcing women and girls into marriage is a serious abuse of human rights."