Commentary on Meditations: B5:27

'Live with the gods.' He lives with the gods who consistently shows them his soul content with its lot, and performing the wishes of that divinity, that fragment of himself which Zeus has given each person to guard and guide him. In each of us this divinity is our mind and reason.

Another passage from Marcus that screams amor fati.  You 'live with the gods' when you accept and love your fate.  This means being 'content with your lot' and doing what the gods wish you to do.

What is unique about our nature as human beings?  Our ability to reason and think.  This is the divine portion in us that sets us apart from so many other living organisms.  We live according to nature when we use what nature gave to us - our ability to think and reason.

(see also Citadel p. 123, 265-266