Several "side-by-side" editions exist. Look for "Qasas un Nabiyeen – English Translation by Mufti Afzal Hoosen Elias" (Kutub Khana). You can find torrents or direct downloads on Islamic library sites, but a legal purchase is recommended.
[Volume 1] ──> [Volume 2] ──> [Volume 3] ──> [Volume 4] ──> [Volume 5] (Novice) (Beginner) (Intermediate) (Advanced) (Fluent) qasas un nabiyeen arabic pdf