You can't dodge someone who uses pure damage skills or touch spells.
Tested with 900 Evasion vs 90 Accuracy.
While no spells were activated. dodge was happen 3/4 hits.
While Only Shadow Dance was active on the attack vs 900 Evasion. No hits were dodges.
While Only Shocking Touch was active on the attack vs 900 Evasion. No hits were dodged.
This one was not tested by me. I don't know the Accuracy the other player had.
While Using the skill Concussive Strike (what apply's true damage) attacks were not dodged after the first hit vs the 900 Evasion player.