vs
Allure of Darkness
Card Text: Draw 2 cards, then banish 1 DARK monster from your hand, or, if you do not have any in your hand, send your entire hand to the GY.
Mystical Space Typhoon
Card Text: Target 1 Spell/Trap on the field; destroy that target.
The Verdict
Case 1: Player-A activates Allure of Darkness first, Player-B then activates Mystical Space Typhoon in response: Allure of Darkness will still be able to complete its effect.
WINNER = Allure of Darkness
Case 2: Player-B first activates Mystical Space Typhoon on a face down, set Allure of Darkness before Player-A declares activating their card: Allure of Darkness will not be able to be activated and is destroyed.
WINNER = Mystical Space Typhoon
Further Resources
See the difference between negation and destruction here.