Residents shield Christians in bold exodus from Philippines city

By Tom AllardMARAWI CITY, Philippines (Reuters) - More than 160 civilians walked out of the besieged Philippines city of Marawi just after dawn on Saturday, deceiving Islamist fighters they encountered by hiding the identity of the many Christians among them.The audacious exodus came after text message warnings that a major assault by Philippines aircraft and ground troops was imminent in the center of the southern city, where some 250 militants and more than 2,000 civilians remain trapped."We s