In plain words
Before Bhishma, Drona, and all the rulers of the earth, he said: Partha, behold these Kurus gathered here.
Word for word
In front of Bhīṣma and Droṇa and of all the rulers of the earth, [he] said: O Pārtha, behold these assembled Kurus.
भीष्मद्रोणप्रमुखतः सर्वेषां च महीक्षिताम्उवाच पार्थ पश्यैतान् समवेतान् कुरूनिति