Participants will receive a novel online RCBT-based intervention consisting of 7 weekly 90-minute sessions in a group format.

Participants will receive an online CBT intervention based on Furer and Walker's (2008) protocol, consisting of 7 weekly 90-minute sessions in a group format.

This study aims to assess the efficacy and feasibility of a newly developed online intervention for death anxiety based on Religiously Integrated Cognitive Behavioral Therapy (RCBT). Building upon the framework of Furer and Walker's 2008 intervention protocol, this adaptation incorporates beliefs in an afterlife, aligning with Turkish society's cultural and religious values.

The RCBT intervention consists of seven structured group therapy sessions, each lasting 90 minutes. The program is designed to help participants identify and challenge unhelpful thoughts related to death anxiety while integrating religious resources to promote cognitive restructuring. Key components of the intervention include psychoeducation, cognitive restructuring, exposure exercises, the concept of repentance in the context of trust and belief in the afterlife, gratitude, and value-oriented behaviors.

The Turkish Death Anxiety Scale consists of 20 items that are divided into three subscales: (a) ambiguity of death, (b) exposure to death, and (c) agony of death. These subscales exhibit strong internal consistency, with Cronbach's alpha values of .91, .94, .76 respectively, adding up to a total of .95). It consists of a five-point Likert (0 = Never to 4 = Always). Subscale scores are determined by summing the individual item scores, and the total scale score is determined by summing the subscale scores. Total scale scores can be between 0 and 80, and the higher the score, the greater the level of DA. A score range of 0-7 indicates very low-level DA, 8-25 indicates low-level DA, 26-44 indicates medium-level DA, 45-63 indicates high-level DA, and 64-80 indicates very high-level DA.

Abdel-Khalek's Death Anxiety Scale is a 20-item questionnaire that measures DA. The scale is one-dimensional. Higher scores indicate a greater degree of DA. It consists of a five-point Likert (1 = No to 5 = Very much). The Turkish reliability and validity of the scale were conducted by Sarıçiçek-Aydoğan et al. in 2015 (Cronbach's alpha = .86).

Generalized Anxiety Disorder-7 consists of a four-point Likert (0 = never to3 = almost every day) and 7 items that assess anxiety symptoms. The highest score that can be attained ranges up to 21. A score range of 0-4 indicates mild anxiety, 5-9 indicates moderate anxiety, 10-14 indicates high anxiety, and 15-21 indicates severe anxiety. A cut-off point of 10 points was determined for the total score. The Turkish reliability and validity of the scale were conducted by Konkan et al. in 2013 (Cronbach's alpha = .85).

The Belief in a Day of Judgment Scale comprises 20 items with two subscales: (1) belief in a day of judgment, and (2) bad behavior/actions toward others. It consists of a five-point Likert (1 = Strongly disagree to 5 = Strongly agree). Examples of the items include, "God is the savior and judge of mankind.", and "If I am pure of heart and hands, I shall live in the fear of a just God". A high score on the Belief in a Day of Judgment subscale indicates a strong belief in a Day of Judgment, the conviction that God will judge the living and the dead, and the belief in life after death. A high score on the Bad Behavior/Actions Toward Others subscale reflects the belief that human relationships and actions towards others will be scrutinized on the Day of Judgment. The Turkish reliability and validity of the scale were conducted by Turan et al. in 2020 (Cronbach's alpha = .92).