To care for a Philodendron 'Ring of Fire' variegated, provide bright, indirect light, water when the top inch of soil is dry, use well-draining soil, and fertilize during the growing season, while also considering humidity and support for its climbing nature. 
Here's a more detailed guide:
Light:
Bright, Indirect Light:
Philodendrons thrive in bright, indirect sunlight, which helps maintain the intensity of its leaf colors and promotes healthy growth. 
Avoid Direct Sunlight:
While they can tolerate some direct sunlight, too much can scorch the delicate leaves. 
South or West-Facing Windows:
A south or west-facing window that provides bright, filtered light is ideal. 
Signs of Insufficient Light:
If the variegation becomes less vibrant or the plant grows slower, it may need more light.