Bhashya
एवमेवाथ ह एन प्रतिहर्ता उपससाद कतमा सा देवताप्रतिहारमन्वायत्तेति ॥
In plain words
In this very same way, the pratihartṛ approached him and asked: Which is the deity connected with the pratihāra?
Close to the Sanskrit
In this very manner then the pratihartṛ approached him: Which is that deity connected with the pratihāra?