A group of Kenyan Muslims travelling on a bus ambushed by Islamist gunmen protected Christian passengers by refusing to be split into groups, according to eyewitnesses.
They told the militants “to kill them together or leave them alone”, a local governor told Kenyan media.
At least two people were killed in the attack, near the north-eastern village of El Wak on the Somali border.
The Somali based al-Shabab group says it carried out the attack.
The group often carries out attacks in Kenya’s north-east.
The bus was travelling from the capital Nairobi to the town of Mandera.