As for personal experience dealing with it…
Personally I went through buddhist bootcamp and had success with their style of meditation. Thing is, when you have proper heartfelt prayer, its hundreds of times more effective in a shorter amount of time.
So my parents are Russians, and actually my father in his youth voluntarily decided to take up baptism since he was not baptized in infancy. So there’s a fair amount of syncretism, for example, we say Our Father when we sit down to eat, they like beeswax candles from Church. It’s been more successful with my mother, looking for periods when she is at odds with the group, and inviting her to come to Church. Women work through emotions. One time, my mother tried getting a crucifix blessed that was too showy, so the priest told her off and she started holding a grudge because of that. I think that’s the main reason she fell away, and when my father got into HK stuff, she tagged along cause women always prefer to be led by the man with strong spiritual convictions. However, despite the incident, Buddhism and Hinduism are very cold religions when compared to Christianity. In Christianity, when bad things happen its ok, because God suffered with us, he suffered the most and most unjustly, and its fine. In Buddhism, when you suffer, when bad things happen, its ok because its karma and you deserve it. Christ turned human to save us. Buddha coldly watches on as you reincarnate into pigs and frogs and worms and back to human again for countless eons. It reflects in their community as well. Buddhism is very atomized, it tries to divorce the person from a feeling of nationality or belonging in a family in some sense. But in Christianity, we are called to be one Body of Christ.
With my father, I use intellectual arguments. His main issue with Christianity was a tldr problem of evil. In the Hindu system of Karma and Reincarnation he found an answer to the questions that bothered him. That is, good people suffer because they did bad things in a past life. And bad people prosper because they did good in the past. My argument was that basically, the gurus teach them all about reincarnation, astrology, health habits and sanitation and rituals, and the pantheons of gods and karma… and then they teach them that none of it matters. The goal is to stop generating karma and to break the cycle of birth and death. And it’s like… maybe Christianity isn’t correct about the fact that we only have one life, but think about this way. Suppose we’ve been stuck in this cycle of rebirth for countless eons. Isn’t it better to act as though you have only one shot to “break it”? Because if you dont do it this life, when will you do it? We act as though the reincarnation and karma dont exist, because we are with God. If they are correct, we are going to be freed anyways. If we are correct, hell is gonna be hella hot.
Its worth noting that there is buddhism as practiced by asians and buddhism as practiced by liberal whites. My parents are full blown hindaboos, with very trad viewpoints. But if you’re dealing with happy feely lefties, then you’re dealing with happy feely new age hippies. Ask them about what they believe, show a genuine interest, do a book exchange maybe. Try to figure out the reasons why they believe what they believe, and work with that.