First off Fort Save:
(1d20+12)[19]
Move Action: Create Scimitar Weapon-like Veil
Swift Action: Perform the Encouraging Roar boost maneuver.
Standard Action: Initiate the Enduring Crane Strike Maneuver vs the spider choosing myself for the healing.
Attack:
(1d20+10)[25]
Damage
(1d6+6)[11] +
(2d8)[5] Fire
(Above totals do not add +2 morale from encouraging roar)
If hit is successful heal: [roll1d6+4[/roll]
Spoiler: If Attacked
Show
Immediate Action: Defensive Step counter.
Perception vs Attack: (1d20+8)[18]
If successful (and there is space to do so) 5ft step 1 square SW through the doorway to evade attack.