ISLAMABAD, Pakistan — The husband of a Pakistani Christian woman acquitted after spending eight years on death row on blasphemy charges has appealed to President Trump for refuge, citing danger to the family’s lives.

Ashiq Masih, the husband of Asia Bibi, whose case has outraged Christians worldwide and been a source of division within Pakistan, also appealed to Britain and Canada for assistance.

The appeal came as the police said they had arrested more than 150 people on charges of arson, vandalism and violence during the protests that erupted after Ms. Bibi’s acquittal. A senior police officer, Nayab Haider, said on Sunday that officers were using video to identify others involved in committing assaults, torching property and vehicles, and blocking highways, The Associated Press said.

The Islamist party Tehreek-e-Labaik blocked major roads in Pakistan’s biggest cities for three days, calling for the killing of the Supreme Court judges who acquitted Ms. Bibi on Wednesday, and terming Prime Minister Imran Khan and the country’s army chief enemies of Islam.