Setting object Rotation to RayCast line

Hi , I’m working on kind of shooting mechanics and I stuck on that point. I want to set my bullet rotation exactly same with ray line. I created bullets with this code :

Rigidbody clone;    
Ray vRay = myCam.ScreenPointToRay(Input.mousePosition);    
clone = Instantiate(bullet,transform.position, NEEDSOMETHINGHERE) as Rigidbody;  
clone.rigidbody.AddForce(vRay.direction * shootForce);
Destroy(clone.gameObject, 1);

this code create a clone of my bullet and throw it to somewhere that i click but rotation is not true.

Here is an visualization of what i want:


Assuming you constructed your bullets so that the front of the bullet is the positive ‘z’ side then NEEDSOMETHINGHERE could be: