Quaternions and Instantiate, Froze one Axis

Character Controller Cast Spell, which goes forward, until spell touch the ground, After colision in this spot with Earth, I create in Script below Wall. The problem is that The Wall is always skew.
How Can I fix it ?

Code (CSharp):

1. public class StoneWallEffect : MonoBehaviour
2. {
3.     GameObject SpellObject;
4.     void Awake()
5.     {
6.         SpellObject = Resources.Load<GameObject>("Prefab/Spells/StoneWall/StoneWallEffect");
7.     }
8.     void OnTriggerEnter(Collider other)
9.     {
10.         if (other.name.Equals("Terrain"))
11.         {
12.             GameObject Wall = Instantiate(SpellObject, transform.position, ???????????????) as GameObject;
13.         }    
14.     }
15. }

In my Prefab Wall I set Transform( Position & Rotation) to 0,

 

Did you tried Quaternion.identity?

 

Yes I tried, It doesn't work because, every time I createdWall, it has always the same rotation, like Prefab. Now I Try something like that:

Code (CSharp):

1. public class StoneWallEffect : MonoBehaviour
2. {
3.     GameObject SpellObject;
4.  
5.     Vector3 PlayerPos;
6.     void Awake()
7.     {
8.         SpellObject = Resources.Load<GameObject>("Prefab/Spells/StoneWall/StoneWallEffect");
9.         PlayerPos = transform.position; // In this place I save information about Player Position, when object is born."Object" I mean magic ball which I cast
10.     }
11.  
12.     void OnTriggerEnter(Collider other)
13.     {
14.         if (other.name.Equals("Terrain"))
15.             GameObject Wall = Instantiate(SpellObject, transform.position, Quaternion.LookRotation(PlayerPos - transform.position, Vector3.up)) as GameObject;  
16.     }
17. }

Created Wall looks better. But it is still problem with that, wall is not perpendicular to the Ground, I marked it on the picture.

 

I would start debugging this from instantiating a simple cube(with quaternion.identity)to separate whether this is a scripting issue or model issue. My guess is that it is connected to parenting/parented game objects.