There are eleven Rudras, of whom Sankara, Lord Siva, is predominant. BG 1972 purports

Expressions researched:
"There are eleven Rudras, of whom Śaṅkara, Lord Śiva, is predominant"

BG Chapters 7 - 12

There are eleven Rudras, of whom Śaṅkara, Lord Śiva, is predominant. He is the incarnation of the Supreme Lord in charge of the modes of ignorance in the universe. Among the demigods Kuvera is the chief treasurer, and he is a representation of the Supreme Lord. Meru is a mountain famed for its rich natural resources.

BG 10.23, Translation and Purport:

Of all the Rudras I am Lord Śiva; of the Yakṣas and Rākṣasas I am the lord of wealth [Kuvera]; of the Vasus I am fire [Agni], and of the mountains I am Meru.

There are eleven Rudras, of whom Śaṅkara, Lord Śiva, is predominant. He is the incarnation of the Supreme Lord in charge of the modes of ignorance in the universe. Among the demigods Kuvera is the chief treasurer, and he is a representation of the Supreme Lord. Meru is a mountain famed for its rich natural resources.