Dua When Getting Good News
الْحَمْدُ لِلَّهِ الَّذِى بِنِعْمَتِهِ تَتِمُّ الصَّالِحَاتُ
alhamdu lillahi alladhi bini'matihi tattimmu assalihat
Praise be to Allah, by whose grace goodness is perfected.
Source: HR. Ibn Majah in the Sunan, No. 3803 and al-Hakim in al-Mustadrak (1/499)
Aisha radhiyallahu 'anha said, Rasulullah sallallahu 'alayhi wa sallam when he saw something he liked, he read the sentence above.