When you look at the stars in the sky or something strange like the great oceans then recite this dua and you will get good deeds equal to the number of the stars in the sky and likewise.
اَللَّهُمَ رَبَنَامَاخَلَقْتَ هَذَابَاطِلاً٠سُبْحآنَكَ فَقِنَا عَذَابَ النَّارِ٠