An inventory of the inalienable. A half-line from Euripides (an unknown tragedy; in Marcus's anthology it adjoins the Antiope verse of 7.41 and reads as its continuation): "for the good is with me — and the just" (τὸ εὖ μετ’ ἐμοῦ καὶ τὸ δίκαιον). After the verse on possible abandonment by the gods comes the answering argument: let the external be taken away, there remains with me the one thing that is mine — the good and the just. The preposition μετά ("with me") sets the topology of DOGMAautarky: virtue is not among the things that can be removed but stands "beside" the subject himself, inseparable from him, and therefore invulnerable to fortune.
Sufficiency. Two words — εὖ and δίκαιον — are a folded formula of the doctrine "DOGMAvirtue is sufficient for happiness": whoever has them needs nothing external, for happiness is localized in them, and they are "with me." Cf. 03-06 ("is there anything better than justice, truth, temperance? — give them no place") and 7.31 (indifference to what lies between virtue and vice). A strict note: τὸ δίκαιον here is "the just" (a substantivized adjective), not the term δικαιοσύνη; in the text it is a theme, not the lemma. The discipline is desire (not to depend on what is taken away), with action sustaining (the just as my work).