Build and Runes
Once his Apprehend is on cooldown, he is incredibly easy to kite.
Denying him a reset on his ultimate with a shield/heal will significantly lower his damage output in a teamfight.
Stay out of his Apprehend range if possible.
When you run away try to stay out of Darius’ Q as it will give him 5% movement speed and do more damage.
If you are behind: Get Quicksilver/Mercurial – Magic resist weakons his passive and Mercurials Active gets rid of his slow and Bloodstacks. So when you have 5 Stacks and he wants to ult: Boom, active, ult does half dmg.