Heat large soup/stock pot on medium heat, once warm add oil and onions. Saute until onions start to soften. Add carrots and celery, saute for 5-8 mins.
Add garlic and spices, saute for 1-2 mins.
Add stock, water, bay leaf, red lentils, zucchini, potato, tomatoes, salt and pepper
Bring to just a boil (not a full on boil) turn down and simmer until lentils and vegetables are cooked, about 20 mins or so (I usually put a lid on but not all the way - leave it ajar)
Stir frequently and test doneness and flavor - add spice to your liking
Turn off heat, add greens and lemon juice and cover. Serve once greens are wilted but still bright green