Their burst chain is faster than your DoTs - use Fear/Psychic Scream defensively on the engage rather than trying to trade early.
Mirror-ish DoT matchup - Mana Burn/Curse of Tongues one healer to tip the sustain race in your favor.
You're at a burst disadvantage - play defensively behind Paladin Blessings/bubbles until DoTs start to outweigh their damage.
Two DoT-heavy teams stalling each other out - whoever lands Fear/Psychic Scream on the enemy Paladin first usually pulls ahead.