Devotion is a Monastery technology. Units are 15% harder for enemy Monks to convert.
- Building: Monastery
- Age: Castle Age
- Cost: 100 food, 200 gold
- Research time: 40 seconds
- Available to: every civilization
The cheaper Castle Age conversion resistance upgrade, before Faith.
Figures from the game data for Update 185872 (September 2026), at the time of publishing.