Haha, you really don't know this do you? Empathy is mainly used when you're damage, so it actually DEALS DAMAGE. Not to mention there is also a cap on this. What the hell is fear? TERROR. Stick it in your notepad or something. It does no damage whatsoever...who told you that it even dealt damage? Plus, just forcepush the DK when you see "Dreadknight begins to use terror!" Bam, you cancelled our silence. Harmtouch...that's a whole different thing. Most people tend to not use that due to the really long cool down, but yes if used, it can prove to be devastating. If the disciples pushes the DK right, he will definitely have enough time to pray and heal.
Your scenario is basically 1 sided against the Disciple to prove your point. Be more realistic, and/or fan more knowledge of the topic. That scenario only happens if the disciple is a shithead and doesn't know how to fight.