Lightseekers Card Game Discussion
If I have a Buff that stops the next attack, does that include damage dealt from my opponents Buffs?
No, it just cancels your opponent's next attack effect -- either from an Attack card or an Attack Ability.
It does not cancel the next instance of damage.
For Lightseekers the wording on the card is very important. 'Attack' refers to attack cards and attack abilities. Damage is a separate thing and can be done via sources that aren't affected by cards that stop attacks.