Title: L'Invincible espérance
Subjects: Christianity and other religions, Islam, Relations, Christianity, Martyrdom, Hope, Spiritual life, Catholic Church, Histoire, Sources, Église catholique, Christianisme, Martyre, Espérance, Aspect religieux, Vie spirituelle, Interfaith relations, Spiritualité, Document, Chergé, Christian de, Prieuré de Notre-Dame-de-l'Atlas, Eglise catholique, Trappists
Places: Tibehirine (Algeria), Algeria, Tibehirine