Passage 1.6.6
διελθόντος δὲ τοῦ χειμῶνος Δημήτριος πλεύσας ἐς Κύπρον Μενέλαον σατράπην Πτολεμαίου ναυμαχίᾳ καὶ αὖθις αὐτὸν Πτολεμαῖον ἐπιδιαβάντα ἐνίκησε· φυγόντα δὲ αὐτὸν ἐς Αἴγυπτον Ἀντίγονός τε κατὰ γῆν καὶ ναυσὶν ἅμα ἐπολιόρκει καὶ Δημήτριος. Πτολεμαῖος δὲ ἐς πᾶν ἀφικόμενος κινδύνου διέσωσεν ὅμως τὴν ἀρχὴν στρατιᾷ τε ἀντικαθήμενος ἐπὶ Πηλουσίῳ καὶ τριήρεσιν ἀμυνόμενος ἅμα ἐκ τοῦ ποταμοῦ. Ἀντίγονος δὲ Αἴγυπτον μὲν αἱρήσειν ἐκ τῶν παρόντων οὐδεμίαν ἔτι εἶχεν ἐλπίδα, Δημήτριον δὲ ἐπὶ Ῥοδίους στρατιᾷ πολλῇ καὶ ναυσὶν ἔστειλεν, ὡς εἴ οἱ προσγένοιτο ἡ νῆσος ὁρμητηρίῳ χρήσεσθαι πρὸς τοὺς Αἰγυπτίους ἐλπίζων· ἀλλὰ αὐτοί τε οἱ Ῥόδιοι τολμήματα καὶ ἐπιτεχνήσεις παρέσχοντο ἐς τοὺς πολιορκοῦντας καὶ Πτολεμαῖός σφισιν ἐς ὅσον δυνάμεως ἧκε συνήρατο ἐς τὸν πόλεμον.
When winter had passed, Demetrius sailed to Cyprus and defeated Menelaus, the satrap of Ptolemy, in a naval battle, and later vanquished Ptolemy himself when he crossed over to assist. After Ptolemy fled into Egypt, both Antigonus by land and Demetrius by sea laid siege to him simultaneously. Ptolemy, brought to extreme danger, nonetheless preserved his rule by positioning his army defensively around Pelusium and resisting with his fleet on the river. Antigonus, having no further hope of capturing Egypt given the present circumstances, dispatched Demetrius with numerous troops and ships against Rhodes, hoping that, if the island were subdued, it could serve him as a base from which to attack the Egyptians. However, the Rhodians themselves exhibited daring actions and devised ingenious stratagems against their besiegers, and Ptolemy as well contributed assistance to the extent of his abilities for their war.