Pathofexile 维基

The Arrow Dodging keystone passive skill gives the following effects:

Note that this doubles evasion CHANCE, not evasion RATING. This means that if your evasion chance were 45%, it would be doubled to 90% vs projectiles.

If you were to take the Iron Reflexes Keystone along with this one, your overall Evasion rating would be lowered to 5% (it can never be below 5%), and this passive would increase your chance to Evade to 10%.

Note that this does not work on spell projectiles as spells do not have Evade check.