What to say after mentioning important people in islam
1- Subḥānahu Wa Ta'Ala ( Glorified and Exalted be He) or Azawajal (Mighty and the Majestic)- obviously only used for Allah. as every word of ours should be of good deeds and praising Allah SWT.
2-Sall'Allahu alayhi wasalam' - said only after prophets name (based on hadith, that those who say it after his name will receive reward). it means may Allahs peace and blessing be upon him.
3- 'alayhi salam' which translates as 'peace be upon him. This is said after mentioning the name of one of the Prophets of Allah, in this case, Isa (Jesus) - alayhi salam + Any angel name e..g Jibarel AS meaning Alayhi salam
4- 'radiallahu anhu' -'Allah's blessings be on him' - said for male sahabas (prophet PBUH companions), or his family members or caliphs e.g. usman RA or ali RA. can say it to other important muslims of that erra too.
5-'radiallahu anha' - -'Allah's blessings be on her' said for female eg. family members orprophet daughters/ wives e.g. Aisha RA or khatijah ra or fatima ra. can say it to other important muslims of that erra too.
Do try and use them as they are important and respectful. These people have great respect and should be appreciated. inshAllah.