As lucian, Lucian can be aggressive when he hits level 2. Make sure you hit level 2 at the same time (the first wave followed by 3 melee minions) so you can trade back if he tries to fight. If he gets the level up first, run away.

Unfortunately, their level 6 is stronger than yours, so be careful when fighting post 6.

If you can, try to keep the wave a bit closer early on. It will reduce his chances of all-ins and also help you pick up CS and XP without him zoning you away from farm.

Try to match his poke and auto trades. But, avoid going for extended trades with him as he will usually win those due to his passive.
 As lucian, Lucian can be aggressive when he reaches level 2. Make sure you hit level 2 at the same time (the first wave followed by 3 minions of melee) so you can trade back if he tries to fight. If he gets the level first, run away. Unfortunately, their level 6 is stronger than yours, so be careful when you fight the position 6. If you can, try to keep the wave a little earlier. It will reduce his chances of all the ins and will also help you pick up CS and XP without it zone you away from the farm. Try to match his poke and auto trades. But, avoid going for prolonged jobs with him as he will usually win those due to his passive.