(Imam Reza (a.s) quoted that) Imam Sadiq (a.s) was asked about how to pray for the Jews and the Christians. He said
“Say may God bless you in this world.”
[عن أبي الحسن الرضا (عليه السلام) قال:]
قيل لأبي عبد الله (عليه السلام): كيف الدعاء لليهودي والنصراني؟ قال: بارك الله لك في دنياك.
Similar narrations
Al-Kāfi #2209“It was asked from Abu ‘Abdillah (a.s.) ‘How do I pray for a Jew or a Christian?’ He had said, ‘Say, “May Allah grant you blessing in this...