Complex sentence: It was agreed that the two would meet unarmed, but were to bring with them ten personal bodyguards each, who were to remain one'arrow-shot' away from the pair, except for a single bodyguard who would wait outside the tent.
Split into simpler sentences: It was agreed that the two would meet unarmed, but would bring ten personal bodyguards each. Nine of these guards would remain'one arrow-shot' away from the pair, while a single bodyguard would wait outside the tent.