A group of Muslims on a bus ambushed by a terror group in Kenya are credited with saving lives after they shielded Christian passengers and told the terrorists that if they harmed one of them they would have to “kill them all.”

The attack happened Monday along the border with Somalia and Ethiopia as the bus headed to the city of Mandera.

According to the BBC, the Muslims, mostly women, challenged the al-Shabaab militants telling them they were prepared to die with the Christians.

Al-Shabaab routinely attacks buses in the area, according to authorities, singling out the Christians and killing them. Buses traveling in the area generally have a police escort, but the escort for the bus that was attacked Monday had broken down.

The attack happened in the same area as one this time last year when al-Shabab militants killed 28 non-Muslims traveling to Nairobi for the Christmas.

Al-Shabaab is a Somali-based terror organization the United States has designated as a “foreign terrorist organization.” The group was responsible for the raid on Garissa University in April where 150 were killed. Witnesses say those attacked were asked to recite passages from the Koran. If they could not, they were shot.

In Monday's attack, gunmen sprayed the bus with bullets, killing two people, The Telegraph reported.