Methods/Design: Participants would be identified and recruited through a door-to-door survey of families severely affected by the 2015 earthquake in Bhaktpur municipality of Nepal. PTSD Checklist for DSM-5 (PCL-5) will be used to screen all adult survivors (aged 18 and above) for the possible presence of PTSD, and the CAPS-5 interview will be used for the diagnosis of current PTSD. Investigators aim to include 240 consenting participants in a single blind randomised controlled clinical trial. All participants will be randomly allocated to one of three treatment conditions (N = 80 each): 4-session revised narrative exposure therapy (NET-R), 2-session group-based control-focused behavioural treatment (CFBT-R) involving instructions to conduct self-exposure, or a 3-month waiting list. In both NET-R and CFBT-R interventions, treatment sessions will last 90 minutes; NET-R will be delivered within a week while CFBT-R will be done over 2 weeks. All participants will be subjected to blind assessments for PTSD symptom severity with CAPS-5 and Fear and Avoidance questionnaire at pre-treatment (T0) and 3-month post-treatment (T1).