Dispelling rolls from your opponent against any spell targeting models with this rule suffer a -1 modifier. This also affects a Yamabushi’s Prayers of the Kami Bound Spells and the Bound Spell from the Mikoshi Shrine, but no other Bound Spells.
This rule only takes effect if the total number of affected models with Ritual Meditation is higher than the number of affected models without this rule (this is also true for Aura spells).