Why do you become defensive?  For you believe there is something to
protect.  This implies a separation
between a perceived individual self and another.  When you can shed all thoughts and belief
systems of the ego, which knows only separation, then there is nothing to
defend, no reason to become defensive.  There
is only peace.  Judgment disappears,
along with anger, fear, and all of the other less than optimal results of
feeling separated and alone. 

There is nothing to battle, nothing to fight, and
no need to feel defensive.  There is
nothing to win and nothing to lose from the perspective of the soul, where all
is one.  If you disagree with this, then
you are thinking like a human, which is quite understandable for those who have
not truly made a re-acquaintance with the soul. 
Set that re-acquaintance as an intention, why don’t you, if you are
tired of defending an illusion.