Hi @lovey529. I do have lung cancer, but have been able to avoid radiation, so I don't have first-hand experience.
Others in our group may be able to help; @bpb.
I'm sure you've done some reading already. This is fairly generic: https://www.mayoclinic.org/tests-procedures/radiation-therapy/about/pac-20385162
When are you scheduled to begin? Do you know what type of radiation they'll be using?

I have stage 1 A lung cancer. I am 71 years old.
I had 5 consecutive rounds of Cyberknife Radiation.
My only side effect was fatigue. The Radiation was a very easy process.
This was done in March of this year, awaiting future tests and checkups.
I personally opted for Radiation instead of surgery.

Hi Lovey - I am in my 3rd radiation treatment for NSCLC adenecarcinoma R upper lung and lymph node in same area. I go 5 days a week for treatment and 1 day a week for chemo. I've had 1 chemo treatment so far. I have had no reactions as of yet...the radiation is very quick (maybe 6 minutes) and then it's done. I am well aware of all of the possible side effects of both as they have to tell you and you have to sign off that you have been advised. I'm praying that I won't have any - so far so good. I feel pretty good in fact. But I do have 5 more weeks of every day so some could crop up eventually. I will meet with the rad/onco every Friday to evaluate and discuss and about 3 weeks out will be xrayed to see if any shrinkage. The goal is to shrink both the node and the tumor and if I'm strong enough (I'm 77) to do the robotic surgery. I wish you luck..hang in there...stay positive.
Sandy