Paraskaragrihyasutra 3.4.16

3.4.16

atha paścāt dīdiviśca bhā jāgṛviśca padcādgopāyetāmityannaṃ vai dīdiviḥ prāṇo jāgṛvistau prapadye tābhyāṃ namo 'stu tau mā paścādgopāyetāmiti \16\

Then to the west: 'May the shining one and the waking one protect me from the west.
'Food is the shining one; Breath is the waking one; to them I apply; to them be adoration; may they protect me from the west.'