Forum:"Magical Citadel of Endymion" Help

If you activate "Spell Shield Type-8" as soon as the Citadel spell card activates, does the Citadel become destroyed or can it still stop itself from being destroyed? If so, would it get destroyed because its effect's spell speed is too slow? If it can't stop itself from being destroyed, can cards like dust tornado or raigeki break work and still destroy the Citadel?