They promise that, if Achilles returns to battle, Agamemnon will return the captive Briseis and other gifts.
ðeɪ pɹˈɑːmɪs ðˈæt, ɪf ɐkˈɪliːz ɹᵻtˈɜːnz tə bˈæɾəl, ˈæɡeɪmmnən wɪl ɹᵻtˈɜːn ðə kˈæptɪv bɹˈaɪsaɪz ænd ˈʌðɚ ɡˈɪfts.