Does the

Imorratal (take 10 less damage shield thing)

apply to each unit individually or per tick?

So lets say i have 1 Immortal vs 10xMarines

Would it take 0/0/0/0/0/0/0/0/0/0?
or would it take XX damage per attack tic?

immortal shields can only take 10 damage maximum to their shields so things like a siege tank will still only deal 10 damage to the immortals shields

marines/lings/zealots/stalker etc deal less than 10 damage per projectile so they arent effected by the shield

ok ty =) i was not understanding it from how it was worded