A Beautiful & Concise Authentic Du'a:

Allaahumma 'inni 'as'alukal-'afwa wal'aafiyata fid-dunyaa wal'aakhirati, Allaahumma 'inni 'as'alukal-'afwa wal'aafiyata fi dini wa dunyaaya wa 'ahli, wa maali, Allaahum-mastur 'awraati, wa 'aamin raw'aati, Allaahum-mahfadhni min bayni yadayya, wa min khalfi, wa 'an yamini, wa 'an shimaali, wa min fawqi, wa 'a'uzhu bi'adhamatika 'an 'ughtaala min tahti.

O Allah, I seek Your forgiveness and Your protection in this world and the next. O Allah, I seek Your forgiveness and Your protection in my religion, in my worldly affairs, in my family and in my wealth. O Allah, conceal my secrets and preserve me from anguish. O Allah, guard me from what is in front of me and behind me, from my left, and from my right, and from above me. I seek refuge in Your Greatness from being struck down from beneath me.

 
[Sahih Ibn Majah 2/332 and Abu Dawud]