Sanctuary

“	Reduces incoming Physical and Arts damage by the corresponding amount (only the strongest effect of this type applies).	”
	—In-game tip

Sanctuary is a buff effect in Arknights.

Overview

Sanctuary reduces the Physical and Arts damage taken.

Multiple instances of Sanctuary do not stack; the most effective source takes precedence over the others.

Musha Guards with the MUS-X Operator Module receives 25% Sanctuary when their HP falls below 50%.

Source	Range/target	Value
Peerless Bravery	Self when at <50% HP	Elite 1: 10% Elite 2: 20% HES-Y Stage 2: 25% HES-Y Stage 3: 28% Potential 5: +2%
Cloak of Lingering Flame	Self and the friendly unit behind	Elite 2: 18% Potential 5: +3%
Ecological Interaction	The Flowing Shape after it copies a melee Operator while active	Level 1-3: 10% Level 4-6: 15% Level 7-Spec. 1: 20% Spec. 2-3: 25%
Ethereal Incandescent Clouds	Friendly units within range with <40% HP	Base: 8% Elite 1: 14% Elite 2: 20%
Forest Sanctuary	Friendly units within range with >70% HP	Elite 1: 8% Elite 2: 14% Potential 5: +2%
Stoic Atonement	Self while active	Level 1-3: 30% Level 4-6: 40% Level 7: 50% Spec. 1-2: 55% Spec. 3: 60%
Silent Sentinel	Friendly units within range	The lower the affected unit's HP, the more effective the Sanctuary is (caps at 30% or below HP) Elite 1: 8% > 15% Elite 2: 10% > 24%
Blessing	Friendly units within range with <40% HP	Elite 1: 12% Elite 2: 18% Potential 5: +2%
Longing for Home	Self while active	Level 1-3: 20% Level 4-6: 25% Level 7: 30% Spec. 1: 32% Spec. 2: 35% Spec. 3: 40%

Operator	Subject	Interaction
	Return to the Immortal Mountain	Increases the HP threshold of Ethereal Incandescent Clouds to 100% (i.e. removing it) while active.
	Overlooking Vision	The Night Banisher applies Silent Sentinel with greater effectiveness to friendly units within its range. Level 1: 1.8× Level 2: 1.9× Level 3: 2× Level 4: 2.1× Level 5: 2.2× Level 6: 2.3× Level 7: 2.4× Spec. 1: 2.6× Spec. 2: 2.8× Spec. 3: 3×
	Dreadnought Protocol	Multiplies the Sanctuary effect of Silent Sentinel while active. Level 1: 1.2× Level 2: 1.3× Level 3: 1.4× Level 4: 1.5× Level 5: 1.6× Level 6: 1.7× Level 7-Spec. 3: 1.8×
	Forest's Embrace	Multiplies the Sanctuary effect of Blessing and increases the HP threshold. Effect Level 1: 1.4× Level 2: 1.5× Level 3: 1.6× Level 4: 1.7× Level 5: 1.8× Level 6: 1.9× Level 7: 2× Spec. 1: 2.1× Spec. 2: 2.2× Spec. 3: 2.3× HP threshold Level 1-6: 50% Level 7-Spec. 2: 55% Spec. 3: 60%