STUDY PROTOCOL Open Access Resiliency Engagement and Care in Health (REaCH): a telephone befriending intervention for upskilled rural youth in the context of COVID-19 pandemic—study protocol for a multi-centre cluster randomised controlled trial Saju Madavanakadu Devassy 1,2* , Komal Preet Allagh 1,2 , Anuja Maria Benny 1,2 , Lorane Scaria 1,2 , Natania Cheguvera 1,2 and I. P. Sunirose 1 Abstract Background: The lockdown associated with the COVID-19 pandemic is likely to impact people’s mental health, especially those from economically disadvantaged and vulnerable sections of society. Mental health can be affected by many factors, including fear of disease transmission, from response measures against the pandemic like social distancing, movement restriction, fear of being in quarantine, loneliness, depression due to isolation, fear of losing work and livelihood and avoiding health care due to fear of being infected. Telephonic befriending intervention by non-specialists will be used to provide social and emotional support to the youth from the Deen Dayal Upadhyaya Grameen Kaushalya Yojana (DDUGKY), an initiative of the Government of India. This study aims to promote mental wellbeing and reduce depressive symptoms by assisting participants to mobilise social support from family, friends and significant others by using the telephonic befriending intervention. Methods: In this article, we report the design and protocol of a multi-centre cluster randomised controlled trial. In total, 1440 participants aged 18–35 years who have recently completed their course out of the DDU-GKY initiative will be recruited in the study from 12 project-implementing agencies (PIAs) across six geographical zones of India. Participants from 6 of these agencies will be assigned to the telephonic befriending intervention arm, and the other six agency participants will be assigned to the general enquiry phone call arm (control). The primary outcomes of this study are mental wellbeing, depressive symptoms and perceived social support. Baseline assessments and follow-up assessments will be carried out 1 month following the intervention using WHO-5, PHQ and MSPSS-12 questionnaires. The befriending intervention will be provided by DDU-GKY staff, whom a virtual training programme will train. © The Author(s). 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. * Correspondence: saju@rajagiri.edu; sajumadavan@gmail.com 1 Rajagiri College of Social Sciences (Autonomous), Rajagiri P.O, Kalamassery, Cochin, Kerala 683 104, India 2 Rajagiri International Centre for Consortium Research in Social Care (ICRS), Cochin, Kerala, India Devassy et al. Trials (2021) 22:500 https://doi.org/10.1186/s13063-021-05465-5