execution order of Destroy and Physisc.Raycast

Hey kind guys, my situation is as follows: The 'cube' is collider placed in the way of raycast. I am destroying cube, then shooting ray...and the print says that it hit the cube. Why Destroy is executed after Raycast?

 var hit : RaycastHit;
 var cube : GameObject;
     
 function Update()
 {
     if (Input.GetKeyUp ("x"))
     {
         Destroy(cube);
         if (Physics.Raycast (Vector3(0,0,0), Vector3(0,0,-1), hit, 2.0))
         {
             print("you hit:"+hit.collider.gameObject);
         }
     }
 
 }

The execution disorder occurs only when i'm trying to do this in one frame. When i put it into seperate function and add for example 'WaitForSeconds', then Destroy is executed first, after it: raycast, and it hits nothing.