Stopping One Function From Another

Sup. When my character gets hit by an enemy attack, he successfully does his hit animation and loses damage. What I need is a solution to make it so that if he gets hit while he's attacking, the attack function will stop. The reason this is difficult is because I need the attack function to stop from the being hit function, making return; unusable. Here's the scripts. Note: Super big attack script because it's a portion of a combo.

function BeingHit (){ isAttacking = false; comboable = false; animation.CrossFade("getHit",0.03); yield WaitForSeconds(.5); beingHit = false; }

function QuickCombo1() {
isAttacking = true; if(isAttacking == true){ animation.CrossFade("qc1"); yield WaitForSeconds(.5); hitTimeSmall = true; attackMove = true; yield WaitForSeconds(.2); attackMove = false; yield WaitForSeconds(.5); hitTimeSmall = false; comboable = true; yield WaitForSeconds(0.3); if(inCombo == false){ comboable = false; isWalking = true; isMoveable = true; isAttacking = false; } } }