Anas bin Malik reported,
I saw the Messenger of Allah ﷺ on a journey pray eight rakahs of the forenoon prayer. When he had finished, he said, "I have prayed a prayer of hope and fear. I asked my Lord 
for three things, and He granted me two and withheld one. I asked Him not to afflict my community with years of famine, and not to let their enemy prevail over them, and He granted both. I asked Him not to divide them into sects, but He refused me that."
Ahmad 12589
Daifحدثنا يحيى بن غيلان حدثنا رشدين قال حدثني عمرو بن الحارث عن بكير عن الضحاك القرشي
عن أنس بن مالك قال
رأيت رسول الله ﷺ في سفر صلى سبحة الضحى ثمان ركعات فلما انصرف قال إني صليت صلاة رغبة ورهبة سألت ربي عز وجل ثلاثا فأعطاني اثنتين ومنعني واحدة سألته أن لا يبتلي أمتي بالسنين ولا يظهر عليهم عدوهم ففعل وسألته أن لا يلبسهم شيعا فأبى علي
Its isnad is daif, because of Rushdin and because of Husayn bin Ghaylan, for I did not find anyone by this name, nor "Hasan bin Ghaylan," except a teacher of Abu Naeem, the author of al-Hilyah, nor "Husayn bin Ghaylan," nor "Allan," except likewise a teacher of Abu Naeem. The hadith has already appeared at 12425 with a sahih chain. As for Dahhak the Qurashi, he is Ibn Qays bin Khalid, who had a sighting of the Prophet, and there is disagreement over whether he was a companion, and he narrates from Anas.