The most beloved speech to Allah is four, and you may start with any of them: Glorified is Allah and High above any imperfection, All praise be to Allah, there is no god but Allah, Allah is the Greatest. [Muslim]

«أحب الكلام إلى الله أربع لا يَضُرُّك بِأَيِّهِنَّ بدأت: سُبْحَانَ الله، والحمد لله، ولا إله إلا الله، والله أكبر». [صحيح.] - [رواه مسلم.]