This is probably my favorite of the nightly dua'as of the month of Ramadhan:
In the name of Allah the Beneficent the Merciful.
O Allah bless Muhammad and the family of Muhammad.
O Allah, gladden the people of the graves,
O Allah, enrich every poor person,
O Allah, satisfy every hungry one,
O Allah, clothe every unclothed one,
O Allah, help every debtor pay his debts,
O Allah, relieve every distressed one,
O Allah, return every traveller (to his home),
O Allah release every prisoner,
O Allah, correct every wrong in the affairs of the Muslims,
O Allah, cure every sick one,
O Allah, ease our poverty by Your wealth,
O Allah, change our evil state to a good one
through Your excellent state,
O Allah, relieve us of our debts, and help us against poverty,
Surely You have power over all things.