most of us probably know it yet i write for the ppl who don't
"la ill-aha illallahu wahadau la shriqalhu mukhrinin wa hua ala kullu shain khadir"
at least 10 times after Fajr and Maghreb
When Abi Talib was asked to convince the Messenger of Allah he the holy Prophet SAW said :
"O uncle, if they were to put the sun in my right hand and the moon in my left hand to stop me from preaching Islam, I would never stop. I will keep preaching until Allah makes Islam prevail or I die."