तत्पुरुषाय विद्महे । महादेवाय धीमहि ।
तन्नो रुद्रः प्रचोदयात् ॥

Meaning:
This is my offering to the the onlu purushA, Shiva . I meditate to this Lord of Lords. Let that fierce Lord (Shiva) inspire me.

Word meanings:
विद्महे = offering;
महादेवाय = to Shiva;
धीमहि = May meditate;
रुद्रः = Shiva;
प्रचोदयात् = inspire; kindle; urge; induce;;