Translation of "Assurance" in Arabic

His serene self-assurance

هدوءه وثقته بنفسه

And, with assurance that their lives and property would be spared, they opened the gates.

وفتحوا البوابات بعد أن وعدوهم بعدم المساس بهم وبممتلكاتهم.

In an unexpected move, he requested the aid of the Marathas on the assurance that their

في خطوة غير متوقعة، طلب مساعدة المراثا مؤكدا على أنه