In the past 1,400 years, I don't think any groups/religions can match Muslims. The Mongols were vicious but even they lasted nowhere near 1,400 years, probably 165 years maximum.
It was Christian Europeans who stopped the Mongols and later the Islamic armies from conquering Europe.
I'm only stating historical facts. From its humble beginning in the desert of Arabia they conquered North Africa, Persia, parts of Russia, much of the Indian sub-continent, Malaya, Indonesia, Southern Philippines, etc. Don't you think that is pretty amazing?