There's a phrase in Arabic that I want to repeat lots of times in real life. "In sha Allah" - "if God wills" (ان شاء الله). It's said all the time in the middle east:
Person 1: "Great: so I'll see you Thursday!"
Person 2: "In sha Allah"
Person 1: "I'm going to Europe next summer, in sha Allah"
I'm not religious, it's just a great phrase to emphasize how sometimes things are out of control, though we'd like to do something. In America, if you say "hopefully", it really means that it's not firm, not that things might prevent it. Hopefully really sounds negative. Hopefully and in sha Allah really don't have the same connotation, and I don't think there is anything that means in sha Allah the same way culturally in English.