Parry Expert Feat

You turn aside the blows of your foes effortlessly. You gain the following benefits:

Prerequisite: None

• Ability Score Increase. Increase your Strength or Dexterity score by 1, to a maximum of 20.
• Parry. If you're holding a one-handed melee weapon and another creature hits you with a melee attack, you can use your reaction to add your proficiency bonus to your AC, potentially causing the attack to miss you. This bonus to AC lasts until the end of the current turn.

Source: KT