Siddhamalli Periyaval's Taraka mantra:
YATHO VACHO NIVARTHANTHE : ABHRAABHYA MANASA SAHA::
Meaning: The Bliss of the Eternal from which words turn back without attaining; and mind also returns baffled.
He who has realised his oneness with Brahman,and thus knows by identity of his being the Bliss of Brahman,has no fear from anywhere because to him all is one Bliss; there is no break in his extension which creates the 'other' giving room for fear.(Thaittiya Upanishad II.9)
NOTE Everybody should chant this mantra 108 times daily.